November 2009
Stem and leaf anatomy of ten Geranium L. species in Iran
An anatomical study on stem and leaf of ten species of Geranium has been performed in order to distinguish tuberous from rhizomatous species. Cross section of stem, number of palisade parenchyma, presence or absence of crystals and shape of epidermal cells in leaf are important characters to distinguish taxa. Key words: Anatomy, Taxonomy, Geraniaceae, Iran.
November 2009
Antioxidant substances and pesticide in parts of beet organic and conventional manure
Organic agriculture together with sustainable management systems are growing in the world due to concerns about the environment and the health of the populace: being real and exhaustively documented the damages caused by pesticides. The aim of this work was to observe the possible differences in the concentrations of free radical scavengers and substances recently classified as functional, in different beet...
November 2009
An improved method for screening Fusarium stalk rot resistance in grain sorghum [Sorghum bicolor (L.) Moench]
Screening for resistance to Fusarium stalk rot under natural infection has been difficult because of irregularities in disease development. The toothpick inoculation technique was introduced to overcome this problem, but it lacked a mechanism to monitor inoculum dose. In this study, we introduce an improved procedure where inoculum doses are monitored and disease incubation periods are optimized....
November 2009
Gum arabic yield in different varieties of Acacia senegal (L.) Willd in Kenya
A comparative study was conducted at four locations namely Ngare Ndare, Daaba, Kulamawe and Ntumburi to assess gum arabic yield per tree per picking for different varieties of natural stands Acacia senegal (var. kerensis; var. senegal and var. leiorhachis) in Kenyan drylands for a period of five months. Sample plots measuring 1 hectare were established, one at each study site....
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