February 2012

Effects of soil nutritional status on seedling nursery performance of Arizona cypress (Cupressus arizonica var arizonica Greene) and Medite cypress (Cupressus sempervirens var. horizantalis (Mill.) Gord)

The present research was carried out to determine the influence of different combinations of organic matter as growing media on seed germination, survival, growth, biomass and performance of needle-leaved Arizona cypress (Cupressus arizonica var arizonica Greene) and Medite cypress (C. sempervirens var. horizantalis (Mill.) Gord) seedlings in Koloudeh nursery, located in Amol city...

Author(s): Fatemeh Ahmadloo, Masoud Tabari,Hamed Yousefzadeh, Yahya Kooch and Ahmad Rahmani        

February 2011

Determination of the characteristics of plant exudates from selected tropical trees and unripe fruits

Exudates were obtained  from the African pear and mango trees and also from unripe plantain and banana fruit bunches, and their keeping and functional properties as industrial raw materials were determined. Exudation from the trees was carried out by making an incision on the tree bark, while those from the unripe fruit were collected from the cutting made to severe the bunch from the stock during harvesting....

Author(s): David Akpoebi Akpuluma and Charles Chukwumah Opara        

February 2011

Diversity in chromosome number and raphide morphology of yam (Dioscorea spp.) genotypes from Sierra Leone

The ability to count chromosomes is among the valuable tools used by plant breeders and cytogeneticists. This exercise is difficult with yams (Dioscorea spp.) since the chromosomes are small, dot-like, frequently having only a few cell division visible in a single root tip. The aim of this study was to...

Author(s): P. E. Norman, P. Tongoona and P. E. Shanahan