Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 447

JPBCS Articles

Genotype and genotype x environment interaction effects on the rice grain yield performance in different agro-ecologies in Tanzania

May 2024

This study aimed to assess the potential of elite rice lines to perform consistently and provide a high yield in several testing environments in Tanzania. A total of eleven rice genotypes were assessed for their yield performance and stability during two consecutive cropping seasons at three different environments. The assessment of grain yield stability was conducted using the Additive Main effect and Multiplicative...

Author(s): Sitta Barnabas Justo, Herman Gerald Mkamilo, Neema Omar Danga, Ramadhani Huseni Bakari, Fatma Suleiman Ally, Rebecca Ambokile Mwakapala, Mbaraka Abubakari Batare, Victoria Bikogwa Bulegeya, Sophia Kashenge, William Titus Suvi, and Sang-Bok Lee  

Evaluation of yellow common bean (Phaseolus vulgsaris L.) genotypes for resistance to anthracnose

April 2024

Anthracnose, caused by the fungus Colletotrichum lindemuthianum, is a significant disease affecting common bean (Phaseolus vulgaris L.). The identification of sources of anthracnose resistance within the yellow market class is crucial for developing yellow bean varieties resistant to anthracnose. The objective of this study was to assess a set of yellow common bean genotypes for resistance to eight races of C....

Author(s): Kelvin Kamfwa  

Performance of early-maturing topcross maize hybrids across multi-environments

February 2024

Maize is one of the most important cereal crops used as source of food and feed. Identification of suitable maize inbred lines and testers for the development of stable maize hybrids can be challenging. The assessments of the combining ability of selected maize inbred lines and testers, agronomic performance and yield stability of the resultant topcross hybrids would provide useful information that would guide the...

Author(s): Anthony Job, Innocent Osemare Iseghohi, Moses Terngu Igyuve, Richard Olayiwola, Richard Akinwale, Gabriel Ogala Ojo, Ayodeji Abe, Oluwafemi Obisesan and Emmanuel Ogundare  

Genetic variability and stability analysis of multi environments trials for durum wheat grain yield in Ethiopia

February 2024

Genotype x Environment interactions and identification of stable genotypes in crop breeding programs for the production of grain crops under rain fed environments have become challenging. The study aimed to identify high yielding and stable durum wheat genotypes that are best suited for the relatively long season, high rain fall wheat growing environment of Ethiopia. In the study a total of 51 durum wheat genotypes...

Author(s): Alemayehu Zemede, Yewubdar Shewaye, Mekuria T., Shitaye H. and Wasihun L.  

Perception of the preferences of the links in the Spider plant (Cleome gynandra L.) value chain in Burkina Faso

January 2024

Spider plant (Cleome gynandra L, Cleomaceae) is used in many parts of the world as an emergency crop, enabling populations to survive periods of hunger and famine. It is a leafy vegetable much appreciated by local populations, whose tender leaves and stems are used to prepare a variety of local dishes. The aim of this study was to gain insight into the perceptions and preferences of stakeholders in the C. gynandra L....

Author(s): SAKANDE Boureima, ZIDA Wendpagnagdé Félicien Marie Serge, SORY Siédou, KIEBRE Zakaria and BATIONO/KANDO Pauline  

Insights into finger millet production: constraints, opportunities and implications for improving the crop in Uganda

November 2023

Finger millet [Eleusine coracana (L.) Gaertn.] is an important staple food crop cultivated by many smallholder farmers in drought prone areas of Africa for food, nutritional security and income generation. It serves as an important source of energy, proteins, minerals and calcium to many Ugandans. In addition, the sale of finger millet grain and value-added products like the different “busheera” beverages...

Author(s): Faizo Kasule, Ronald Kakeeto, Denis Erro Tippe, Daniel Okinong, Charles Aru, Peter Wasswa, Chrispus A.O Oduori, and Scovia Adikini  

Controlled pollination and representativeness of the parental genotypes used during the regeneration of old Tall coconut accessions (Cocos nucifera L.) from the International Collection for Africa and the Indian Ocean

October 2023

After 20 years of conservation of accessions of Tall coconut palms in the International Coconut Collection for Africa and the Indian Ocean (ICC-AIO), they become unusable because of the hight of the coconut palms which makes variety creation operations difficult. The regeneration of old accessions was therefore undertaken. However, the representativeness of the parental palms used as male or female genitors during the...

Author(s): Yao Saraka Didier Martial, Koffi Eric-Blanchard Zadjéhi., DARAMCOUM Marie Pierre Wentoin Alimata, Konan Konan Jean Louis, Bourdeix Roland, Diarrassouba Nafan, Konan Kouamé Jean Noel and SIE Raoul Sylvère  

Targeting and mapping resistance to Cercospora sojina in two elite soybean (Glycine max L.) populations

October 2023

Frogeye Leaf Spot (FLS) is a soybean disease caused by the fungus Cercospora sojina. It is distinctly signified by red-brown circular lesions on the leaves that can move to the stems, pods, and seeds in severe infections. QoI inhibitor fungicides had been priorly used to control C. sojina, but resistance was quickly developed. Without adequate control, yield can be reduced to 40% when environmental conditions are...

Author(s): Stella K. Kantartzi, Kelsey McAllister and Yi-Chen Lee

Yield performance and stability evaluation of Striga-resistant sorghum (Sorghum bicolor [L.] Moench)

September 2023

Sorghum is one of the most important cereal crops in Ethiopia. However, the productivity of this important crop is low owing to different factors, of which Striga is most detrimental. Multi-environment performance evaluation was carried out consisting of 11 sorghum genotypes. The objective was to select better performing, Striga-resistant and stable sorghum lines. The trial was conducted at three Striga prone areas of...

Author(s): Fisseha Worede, Kebede Teshome and Fasil Tarekegn

Evaluation of stem borer resistant maize genotypes for resistance to fall armyworm (Spodoptera frugiperda J.E. SMITH) infestation

September 2023

Fall armyworm (FAW) is currently the most destructive insect pest of maize in sub-Saharan Africa (SSA). Varieties that combine high grain yield (GY) with tolerance to FAW would enhance and stabilize maize productivity in SSA. Genotypes resistant to lepidopteran pests like stem borer (SB) could serve as potential sources of alleles for development of FAW resistant varieties. This study was conducted to assess some...

Author(s): Nesma Alaaeldin Zakaria Moussa, Ayodeji Abe, Anthony Oluwatoyosi Job, Yinka Odunayo Kolawole and Amudalat Bolanle Olaniyan  

Repeatability and number of harvests required for selection in coconut hybrid varieties

September 2023

In the breeding of perennial plant species, the coefficient of repeatability is an important parameter because it allows for effective early selection of superior genotypes, thus saving time and cost. The objective of this study was to determine the minimum number of years required for observation to identify superior genotypes of coconut with a high degree of accuracy. Four hybrid varieties of coconut were evaluated in...

Author(s): Agho Collins, Adetimirin, V. O., Odewale, J. O. and Ahanon, M. J.  

Varietal differences in symbiotic nitrogen fixation and nitrogen redistribution in common bean

July 2023

The objective of this study was to investigate varietal differences in symbiotic nitrogen fixation (SNF) and redistribution of N in the leaves and stems. Five Andean genotypes Sisi, Bukoba, Red Hawk, Mecost and Cardinal were evaluated for SNF and N redistribution in a field trial conducted at University of Zambia, Lusaka, Zambia. Nitrogen derived from the atmosphere (NDFA) ranged from 15.9 kg ha-1 (Cardinal) to 48.4 kg...

Author(s): Kelvin Kamfwa  

Inheritance of bacterial wilt resistance in five tomato cultivars

May 2023

Five tomato cultivars were studied for inheritance of bacterial wilt resistance. Lines AVTO1429, AVTO1424, and AVTO1314 have the resistance gene, Roma VF lacks the resistance gene, and Valoria Select is claimed to have resistance but has not been evaluated. The study, which was carried out in a split plot design, involved six generations and backcrosses that were conducted in a greenhouse and a field. Artificial...

Author(s): Francis Kamau Kathimba, Paul Macharia Kimani, Rama Devi Narla and Leonard Muriithi Kiirika  

Diversity of Dioscorea bulbifera Linn in Uganda assessed by morphological markers and genotyping-by-sequencing technology (GBS)

May 2023

Dioscorea bulbifera L. is a widely distributed plant in the humid and sub-humid tropics. The taxonomic treatment of this species is ambiguous due to its extreme polymorphic morphological characters. Therefore, it is imperative to assess the species distribution, and the inter and intraspecific variability relationships in D. bulbifera. In this study, the genetic diversity and species distribution of 41 accessions of D....

Author(s): Hilda Ikiriza, Hedmon Okella, Naasson Tuyiringiye, Ali Milton, Nuwagira Catherine, Raphael Wangalwa, Grace Kagoro-Rugunda, Abubaker Muwonge, Mai Abdalla Ali Abdalla, and Casim Umba Tolo  

Genetic analysis of agronomic characters in chickpea using line × tester mating design

April 2023

Twenty-one crosses developed from the frame of line × tester analysis along with ten parents were grown in two replicates experiment. Data on days to flowering, days to maturity, plant height, number of pods/plant, number of primary branches, number of secondary branches, number of tertiary branches, number of seeds per pod and seed yield per plant (g), revealed high significant differences exist among lines,...

Author(s): Ashraf Izzeldin Abdalla and Dhan Pal Singh  

Genetic bio-fortification of cereals from a plant breeding perspective

February 2023

Genetic “biofortification” presents an opportunity to provide sustainable and cost effective solution to the perennial problem of ‘hidden hunger’ prevalent in most marginalized regions of the world. Diets in households across many developing countries typically consist of high calorie crops which are mostly cereals with limited diversified food. Production of cereal crops with elevated quantities...

Author(s): Tumbare Tererai and Maphosa Mcebisi  

Screening for yield-related agronomic traits in a panel of locally conserved common bean (Phaseolus vulgaris L.) accessions

January 2023

Characterization and conservation of germplasm is a critical step toward the genetic improvement of the crop. This study assessed variation in 257 common bean genotypes which included 207 accessions obtained the National Gene Bank of Kenya, 33 accessions from Kenya Agricultural and Livestock Research Organization (KALRO), 13 landraces collected from farmers’ fields and four commercial varieties for various...

Author(s): Wanjohi Wahome, Mwangi Githiri, Peter Kahenya Kinyanjui, Mary Esther Muyoka Toili, and  Geert Angenon

Nutritional and phytochemical characterization of taro [Colocasia esculenta (L.) Schott] germplasm from Burkina Faso

January 2023

Taro (Colocasia esculenta (L.) Schott) is a food crop mainly produced for its nutrient-rich corms. This study aims to characterize the nutritional and antioxidant potential of fifty-nine genotypes of taro to identify the most interesting chemotypes. The traits evaluated were: starch, proteins, soluble sugars, total phenolics, flavonoids, and antioxidant capacity, assessed by Ferric reducing antioxidant power (FRAP) and...

Author(s): Nicolas Ouédraogo, Pierre Alexandre Eric Djifaby Sombié, Renan Ernest Traoré, Hemayoro Sama, Pauline Bationo/Kando, Mahamadou Sawadogo and Vincent Lebot  

Evaluation of elite soybean (Glycine max L.) genotypes for nitrogen nutrition, water use efficiency and grain yield in the Guinea Savanna Agro Ecological Zone of Northern Ghana

January 2023

Nitrogen is essential due to its function in plant growth and development. It is a component of DNA and proteins which are the building blocks of life. Nitrogen is one of the most limiting factors for crop production. The need to meet the huge nitrogen requirement has necessitated the use of synthetic fertilizer. However, its continued application affects soil health, environment, and agricultural sustainability....

Author(s): Duut Matey and Sanatu Mustapaha Alidu  

Factor analysis of morphological characters in wheat (Triticum aestivum L.) lines evaluated in low altitude conditions of the bimodal humid forest zone of Cameroon

October 2022

The primary efforts in any wheat breeding program are the targeting of important traits and the detection of genetic diversity among different wheat genotypes in different environments. Hence to identify prominent traits in wheat lines in low altitude conditions of the bimodal humid forest zone of Cameroon, 38 wheat lines were characterized on the base of morphological traits. The field experiment was conducted in low...

Author(s): Charly Emmanuel MAM, Eddy Leonard Mangaptche NGONKEU,  Gabriel Mahbou Somo TOUKAM, Aminatou Fanche MONGOUE, Honore TEKEU, Patrick Mmala TSIMI, Bolomigui BOYOMO, Ariane Tonkale DAMDJO, Julie Doriane KAMKO, Arlette FOKO and Rostand Romeo CHAMEDJEU,  

Inheritance of stay green physiological determinants in drought tolerant maize inbred lines

August 2022

Stay green is the plant’s ability to sustain photosynthetically functional green leaf area for longer periods, even with excessive water stress. This study was done to understand the gene action that controlled inheritance of the stay green trait with the general objective of contributing to breeding more drought tolerant maize varieties. 10 F1 hybrids from crosses between highly performing and the least...

Author(s): George Terry Epaku, Patrick Rubaihayo, Ivan Chapu, Frank Kagoda and Daniel Kwemoi Bomet  

Genetic diversity assessment among 18 elite cashew tree genotypes (Anacardium occidentale L) selected in Western Burkina Faso

February 2022

The development of cashew orchards increased in recent years in Burkina Faso, due to high nut demand on international markets. However, little activities have been oriented toward cashew cultivar development, and farmers often use seed plants with little or no information about genetic characteristics of the material at hand. Therefore, a description of cashew diversity is needed to provide guidance to farmers and...

Author(s): Konate Moumouni, Tarpaga Windpouiré Vianney,  Bourgou Larbouga and Wonni Issa  

Reaction of selected rice genotypes with monogenic resistance to the isolate of Magnaporthe Oryzae collected at Namulonge, Uganda

February 2022

The fungus Magnaporthe oryzae causes rice blast disease leading to substantial yield losses. This study aims at understanding the effectiveness of R-genes to the isolate of M. oryzae from Namulonge in Central Uganda to decide the incorporation of their carrier lines in local gene pyramiding programs. Eighty-three genotypes (73 monogenic resistance lines and 10 local varieties) were evaluated in two different experiments...

Author(s): Solome Nakiyaga, Zwenhamo Albert Chiteka, Geoffrey Onaga, Paul Gibson, Bonny Oloka, Arfang Badji, Minoru Yoshino, Nobuki Kojima,  Nozaka Jiro and Richard Edema  

Assessment of genetic variability, diversity, and identification of promising lines in linseed germplasm for harnessing genetic gain in central plain of the Indian subcontinent

February 2022

Linseed (Linum usitatissimum L.), cultivated in more than 60 countries, is grown for fiber and oilseed worldwide. Here effort was made to assess the genetic variability in linseed germplasm and identify some promising lines used as parents in the linseed hybridization program. The study was designed with a total of 82 germplasm and a national check in RCBD for genetic variability for 11 agronomic traits. In this study,...

Author(s): Mohammad Ekram Hussain, Vinod Kumar Goyal, Pronob J Paul, Yuvraj Yadav, Uday Chandra Jha and Prabhat K. Moitra  

Evaluation of soybean (Glycine max (L.) Merr.) breeding lines and genotype-by-environment interaction across production environments in Southern Africa

December 2021

Yield is a quantitative trait known to be influenced by changes in the environment in which the crop is grown, suggesting the need to evaluate soybean lines in different growing regions to assess their adaptability and stability. The objective of this study was to evaluate the performance, yield stability, and genotype × environment interaction (G×E) in soybean cultivars, and the informativeness of six...

Author(s): Christabell Nachilima, Henry Cordoba-Novoa, Valerio Hoyos-Villegas, Godfree Chigeza, Noah Manda, David Lungu and Kelvin Kamfwa  

Evaluation of durum wheat (Triticum turgdium var durum) genotypes for drought tolerance using morpho-agronomic traits

December 2021

Identification of durum wheat variety adapted to drought environment is required to expand durum wheat cultivation to lowland areas in order to meet the growing demand of the crop for industrialization. The objective of the study was to evaluate and identify durum wheat genotypes tolerant to terminal drought, using morpho-agronomic traits. One hundred and forty four durum wheat (Triticum turgidium var durum) genotypes...

Author(s): Alemayehu Zemede Lemma, Firew Mekbib Hailemariam,  Kebebew Assefa Abebe and Zewdie Bishaw  

Stay-green genes contributed for drought adaptation and performance under post-flowering moisture stress on sorghum (Sorghum bicolor L. Moench)

November 2021

The need to accelerate breeding for increased yield and better adaptation to drought is an issue of great concern because of the high demand for food and potential climate change poses further challenges. The study was designed to introgress drought-tolerant possessing genes/quantitative trait loci into popular and farmer-preferred cultivars through marker-assisted backcrossing (MABC) and assess for post-flowering...

Author(s): Teklay Abebe, Gurja Belay, Taye Tadesse and Gemechu Keneni  

Yield performance of chickpea (Cicer arietinum L.) genotypes under supplemental irrigation regimes in semi-arid tropics

October 2021

Chickpea (Cicer arietinum L.) grown in the semi-arid environment is not usually irrigated. Knowledge about effect of reduced drought stress effects under supplemental irrigation can improve chickpea productivity. In this study, the chickpea has been submitted to supplemental irrigation during reproductive phase under rainfed conditions. The main objective was to determine the effects of supplemental irrigation regimes...

Author(s): Ruth Muruiki, Paul Kimurto, Bernard Towett, Gangarao Rao

Mode of inheritance for resistance to FOC Race 1 and fruit quality traits in Sukali Ndizi cultivar of Banana

October 2021

Information on the genetic control of resistance to Fusarium oxysporum f.sp.cubense (FOC) race (1) and fruit quality traits in Sukali Ndizi cultivar of banana is key to its genetic improvement. The mode of resistance to Fusarium wilt in Sukali Ndizi was analyzed in 536 hybrids and 5 parental lines and quality attributes in 137 hybrids and two parental lines, grown in same environment. Fruit quality was assessed by...

Author(s): Henry Buregyeya,, Kashub S. Tumwesigye, Moses Matovu, Kephas Nowakunda, Priver Namanya, Wilberforce K. Tushemereirwe, Eldad Karamura and Patrick Rubaihayo  

Impact of climate change on armyworm infestation on maize in Nigeria: A review

September 2021

Maize (Zea mays) is an important food crop in Nigeria, and it is fast becoming the most widely cultivated crop. Several efforts have been made by the Nigeria Government to make the country self-sufficiency in maize production, but some biotic and abiotic factors are impeding this achievement. Among the biotic constraints militating against maize production in Nigeria, armyworm (Spodoptera frugiperda) is most devastating...

Author(s): Adunola M. P., Fayeun L. S. and Fadara A. B.

Exploiting combining ability in a diallel cross between native and elite cucumber (Cucumis sativus L.) varieties

September 2021

F1 progenies derived from a set of diallel crosses involving native and 5 elite cucumber varieties were evaluated in a randomized complete block design (RCBD) with three replications to study combining ability for some important agronomic traits. The analysis of variance revealed that the mean squares due to genotypes were significant for the traits studied, indicating wide diversity among the parents. Mean squares for...

Author(s): Manggoel W., M. I. Uguru, P. E. Ogbonna and M. A. Dasbak

BLUP & AMMI model for stability analysis of wheat genotypes evaluated under irrigated timely sown trials in North Eastern Plains Zone of India

September 2021

Environments explained 49.4%, G×E interaction 28.1%, and genotypes only 5.6% of the total sum of squares due to treatments for the first year of studied period 2018-2019 and 2019-2020. More than 95% of variations had been accounted for by the first seven interaction principal components. Superiority indexes had identified WH1239, DBW187, HD3249 genotypes as per the BLUE estimates.  Same genotypes were...

Author(s): Verma Ajay and Gyanendra Singh

Water use efficiency: Behavior of upland rice lines under water deficit

August 2021

Upland rice (Oryza sativa) is affected by several biotic and abiotic factors that limit the yield potential of cultivars. In relation to water deficiency, the development of drought tolerant and water efficient cultivars is a priority in breeding programs. With this study aimed to evaluate the agronomic behavior of upland rice lines subjected to different irrigations depths aiming for the selection of genotypes that are...

Author(s): Mendes Villela Gabriel, Rosário Neto Antônio, Barbosa Silva Botelho Flávia, Pereira de Lima Isabela, Pereira de Castro Adriano and Goulart Castro Douglas

Response of selected sorghum (sorghum bicolor (l.) moench) genotypes to striga hermonthica (del.) benth in western Kenya

August 2021

Sorghum is an important staple food crop in Kenya, but its yield is low due to many constraints which include diseases, drought, soil fertility, and pests, notably parasitic weed Striga hermonthica. Twenty elite sorghum genotypes and one resistant check were evaluated in three replications in a complete randomized design in Agar Gel (AG) experiment and randomized complete block design on selected Striga hotspot farms at...

Author(s): Dauglas Claoudious Ochiel, Mathews M. Dida, Evans Ouma, P. Ayiecho Olweny, Samuel Gudu

Inheritance and detection of QTL in cowpea resistance to brown blotch disease

August 2021

Brown blotch disease caused by Colletotrichum capsici, is one of the most important disease affecting cowpea production in Burkna Faso. Every year the disease can cause yield losses as high as 42 to 100% on farmer’s fileds. This study aimed to understand the inheritance of its resistance in cowpea and also identify quantitative trait loci (QTL) associated with the resistance. Seedlings of parents and F1, F2 and...

Author(s): Ibié G. THIO, Jean Baptiste TIGNEGRE, Inoussa DRABO, Joseph T. B. BATIENO, Elisabeth P. ZIDA, Mahamadou SAWADOGO, Paco SEREME, Erik W. OHLSON and Michael P. TIMKO

Inheritance studies of grain shape and aroma traits of rice genotypes in Uganda rice germplasm

July 2021

A study was conducted to determine the mode of inheritance for grain shape and aroma traits of lines in the Uganda rice germplasm. Five aromatic and four non-aromatic rice lines were crossed in screen house using North Carolina Design II at the National Crops Resources Research Institute, Uganda. The resulting F2 seeds and their parents were planted in the field using complete randomized block design in two...

Author(s): David Ocan, Richard Tusiime, Bill Williams Khizzah, Jimmy Lamo, Albert Chiteka and Patrick Rutimbanzigu Rubaihayo  

Agromorphological characterization of scarlet eggplant (Solanum aethiopicum L.) grown in the Republic of Benin

July 2021

The scarlet eggplant (Solanum aethiopicum L.) is an African traditional vegetable grown for its edibles leaves and fruits, which can contribute to food security in Republic of Benin. However, very little information is available on the genetic variability of this vegetable for varietal improvement purposes. Sixty accessions of scarlet eggplants collected throughout 52 villages in Benin republic were characterized using...

Author(s): Aguessy Scholastique, Idossou Roger, Loko Yêyinou Laura Estelle, Agre A. Paterne, Dassou Anicet, Dadonougbo Eric, Dansi Alexandre and Agbangla Clément

Phenotypic diversity study on chickpea (Cicer arietinum L.) genotypes managed under different soil fertility levels for Adzuki bean beetle (Callosobruchus chinensis L.) resistance in Ethiopia

June 2021

Chickpea is one of the main annual crops in Ethiopia both in terms of its total cultivated area of pulses and its role in direct human consumption. The major problem to increase pulse production is the loss of seed viability and seeds damage from insect infestation particularly Adzuki bean beetle. Research works conducted on diversity study on chickpea varieties grown under different soil fertility levels were scanty....

Author(s): Sisay Argaye, Gemechu Keneni and Wakuma Bayissa  

Morphological and microsatellite characterization of improved Lablab purpureus genotypes

April 2021

Lablab purpureus is a multipurpose legume mainly grown by subsistence farmers for pulse, forage and vegetable. Despite these diverse uses that can be combined successfully under various agronomic conditions, the bean has not been extensively exploited. Dolichos production in Kenya is constrained by low yielding varieties, pests, poor growing techniques and varieties with non-preferred taste and flavor. A study to...

Author(s): David Ngure, Miriam Kinyua and Oliver Kiplagat  

Identification of best maize-legume based cropping systems under conservation agriculture practices for Central Rift Valley of Ethiopia

April 2021

Cereal crops especially maize production in Ethiopian Central Rift Valley is affected by biotic and abiotic production. This study was conducted for two seasons (2015-2016) and the best cropping system was identified using Randomized Complete Block Design with three replications. The experiment had six treatments (1) Continuous mono-cropping under conventional practice (CN), (2) continuous mono cropping under...

Author(s): Goshime Muluneh Mekasha, Walter Tamuka Mupangwa, Solomon Admassu Seyoum, Alemayehu Zemede Lemma, Haimanot Beruk Senbeta, Mesele Haile Onu and Mamud Aman Tello  

Canadian plant breeder opinions regarding changes to plant breeders’ rights

April 2021

In 1991, Canada became a member of the International Union for the Protection of New Plant Varieties (UPOV). To further incentivize plant breeding research and development, Canada updated its plant breeders’ rights framework in 2015 to become compliant with UPOV-91 (the latest Act of the Treaty). This article reports the results of a survey assessing the impacts of UPOV-91 on Canadian plant breeders, and their...

Author(s): Chelsea Sutherland, Diego Macall and Stuart Smyth  

Reproduction mode and apospory expressivity of selected hybrids of Paspalum notatum Flügge

April 2021

Paspalum notatum Flüggé (bahiagrass) is the most important forage grass in the native grasslands of southern Brazil; the native germplasm is tetraploid and apomictic. Breeding to produce cultivars has been possible due to chromosome doubling of sexual diploid accessions, allowing hybridizations with apomictic genotypes, generating progenies with variability for agronomic traits and segregating for...

Author(s): Juliana Medianeira Machado, Karine Cristina Krycki, Roberto Luis Weiler, Carine Simioni and Miguel Dall´Agnol  

QTL mapping for resistance to Cercospora sojina in ‘Essex’ × ‘Forrest’ soybean (Glycine max L.) lines

February 2021

Frogeye leafspot (FLS), caused by Cercospora sojina, is observed as red-brown lesions on leaves that can coalesce and decrease the photosynthetic ability of soybeans. The average yield loss due to Frogeye Leaf Spot is estimated at approximately 40% in established fields, whereas 100% incidence was previously recorded. QoI inhibitor fungicides were considered an effective control method, but the pathogen quickly evolved...

Author(s): Kelsey R. McAllister, Yi-Chen Lee and Stella K. Kantartzi  

Effectiveness of pyramided genes in conferring resistance to anthracnose disease in common bean populations

January 2021

Anthracnose disease (Colletotrichum lindemuthianum (Sacc. et. Magn) Lams. Scrib.) is one of the most devastating diseases that constrain common bean production in Uganda. A cascading pedigree pyramiding scheme was used to develop common bean populations to evaluate the effectiveness of pyramided and single resistance genes (Co-42, Co-43, Co-5, and Co-9) on disease development. Detached leaf trifoliates of F4:6 genotypes...

Author(s): Kiryowa M., Nkalubo S. T., Mukankusi C., Male A, Gibson P., Tukamuhabwa P. and Rubaihayo P.  

Association and interrelationship of yield and agronomic characters in coffee (Coffea sp L)

November 2020

Coffee is an important commodity in the international market. However, little attention is given to it and its breeding research in Nigeria. This has resulted to low production and foreign earning. The information on relationship between yield and yield- related characters is an excellent and significant tool for breeding. The experiment was conducted on Cocoa Research Institute of Nigeria coffee germplasms. The...

Author(s): Abigail Funlayo Adepoju, Omotayo Olalekan Adenuga, Keji Emmanuel Dada, Chinyere Florence Odey, Samsudeen Tomiwa Balogun and Mohammed BabaNitsa  

Characters association and path coefficient analysis of orange fleshed sweetpotato [Ipomoea batatas (L.) Lam.] genotypes evaluated in Hawassa, Ethiopia

November 2020

The experiment was conducted to assess associations between root yield and yield- related traits of orange-fleshed sweetpotato genotypes to identify traits that have maximum effect on root yield of sweetpotato to make possible selection. Twenty-four Orange Fleshed Sweetpotato genotypes were evaluated in 2017 main cropping season at Hawassa Agricultural Research Center using a Randomized Complete Block Design (RCBD) with...

Author(s): Bililign Mekonnen, Andargachew Gedebo and Fekadu Gurmu  

Assessment of indigenous knowledge associated with Sorghum (Sorghum bicolor L. Moench) seed selection and the seed quality attributes in Fafen Zone of Somali Region, Ethiopia

October 2020

Understanding agro-pastoralist’s indigenous knowledge associated with sorghum seed selection, seed systems, and seed quality management will help to devise strategies for enhancing the food and feed security in crop-livestock mixed farming system. With this intention, indigenous knowledge practices of on-farm sorghum seed selection and evaluation of the seed quality were surveyed, which ultimately contributes to...

Author(s): Abraham Mulu Oljira and Mekennon Girma  

Multi-environment trial and spatial analysis for yield performance of sorghum [Sorghum bicolor (L.) Moench] hybrids in dry lowland sorghum growing areas of Ethiopia

October 2020

Sorghum is one of the most widely preferred and cultivated crops in Ethiopia. It is grown for food and feed components. In the developed world, exploitation of heterosis in most crops (Maize, Sorghum, Rice, etc.) is high. There is a clear need to develop sorghum hybrids in Ethiopia to improve their livelihood by increasing sorghum production and productivity. One of the strategies for increasing sorghum yield is through...

Author(s): Kidanemaryam Wagaw, Amare Seyoum, Amare Nega, Taye Tadesse, Daniel Nadew, Habte Nida, Alemu Tirfessa and Adane Gebreyohannes  

Participatory maize hybrid evaluation for different cropping systems in the central rift valley in Ethiopia

October 2020

This study was conducted at research and farmers’ field. Seven new promising and three standard checks in total ten hybrid varieties were planted and evaluated in 2013 main season. At research field, the genotypes were tested under sole and inter cropping in two replications and each genotype was planted in two rows using spacing 0.75 cm and 0.30 cm between consecutive maize rows and between plants, respectively....

Author(s): Goshime Muluneh Mekasha, Solomon Admassu Seyoum and Alemayehu Zemede Lemma  

Genetic diversity of Ethiopian durum wheat (Triticum durum Desf) landrace collections as reveled by morphological markers

October 2020

Knowledge of the extent and pattern of genetic diversity within and among populations is crucial to identify useful breeding materials and design appropriate collection and conservation strategies. Genetic diversity of 160 durum wheat (Triticum durum Desf) accessions was studied using 15 morpho-agronomic traits. The field studies for morphological characterization were undertaken at Adadi Maryam and Ginchi locations...

Author(s): Meseret Asmamaw Wondifaw, Gemechu Keneni and Kassahun Tesfaye

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