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Marappa, N.
- Line x Tester Analysis in Mungbean [Vigna radiata (L.) Wilczek]
Authors
1 Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bangalore, (Karnataka), IN
Source
Asian Journal of Bio Science, Vol 3, No 2 (2008), Pagination: 289-294Abstract
Line x tester analysis of 25 crosses obtained from 5 lines and 5 testers were made for 14 yield and its associated characters in mungbean. Among the parents, PDM 84-178, PS 16, Tap7, Chinamung, CO 4 and KM 1883 which scored high status were found to be best combiner for most of the characters studied. Nine hybrids exhibited highest per se performance and sca effects for most of the characters studied. The hybrid, Tap7 x KM1883 was the top performer for sca effects. The variances due to specific combining ability (SCA) were found be higher than general combining ability (GCA) variances for all the fourteen characters studied indicating predominance of non-additive give action in the inheritance of the characters studied.Keywords
Gene Action, Combining Ability, Mungbean.
- Screening of Mungbean Genotypes and its wild Relatives for Resistant sources to Cercospora leaf Spot Disease
Authors
1 Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bangalore, (Karnataka), IN
Source
Asian Journal of Bio Science, Vol 3, No 2 (2008), Pagination: 324-326Abstract
Mungbean [Vigna radiata (l.) Wilczek], commonly called as greengram is a major source of protein for poor people. In the present investigation 169 genotypes of mungbean were sown in 13 x 13 simple lattice design with two replications during rabi 2004 under field condition. Disease incidence of Cercospora leaf spot (CLS) was scored on 0-5 scale as developed by Singh (2001). Only wild species, Vigna aconitifolia, V. glabrascence, V. sublobata V. umbellata and a muatant PBM were free from CLS infection were grouped as immune. Five genotypes which registered field resistance to CLS should further subjected to glass house screening and then could be used as resistant sources for introgression of CLS resistant genes into present day susceptible cultivars through hybridization programme.