Working Document Series Open Access 2012 RUF-32061

Agro-Morphological Characterisation of Exotic and Local Green Gram (Mung Bean) (Vigna Radiata) for Breeding Purposes in Uganda

H. TalwanaA. WanialeN. Wanyera

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Abstract

170 words

In order to start a good breeding programme that will potentially develop high yielding and disease resistant varieties, germplasm collection and characterisation is a prerequisite. The objectives of this study were to characterise 38 local and exotic mung bean genotypes with potential of being released as varieties or being used for breeding purposes. The study also aimed at determining the general and specific combining abilities for crosses between local and exotic materials. This study was done at Makerere University Agricultural Research Institute Kabanyolo (MUARIK) and the National Semi-Arid Resources Research Institute (NaSARRI). Results indicated significant differences (P < 0.001) for nearly all traits in the two experimental sites, indicating a high genetic diversity in the genotypes studied. Genotype by environment interactions was significant (P < 0.001) for all the traits indicating inconsistent performance by some genotypes across the two locations. The magnitudes of estimated broad sense heritability for the traits used were generally high as the error and G x E variance components were lower compared to genetic variance component.

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