Gene effects of some agronomic traits through single cross analysis in blackgram (Vigna mungo L. Hepper)

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Research Paper 01/06/2013
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Gene effects of some agronomic traits through single cross analysis in blackgram (Vigna mungo L. Hepper)

A.F.M.M. Haque, M.A. Samad, N. Sarker, J.K. Sarker, A.K. Azad, A.C. Deb
Int. J. Biosci.3( 6), 220-225, June 2013.
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A trait is control by one or more than one gene. Proper knowledge about gene effects of different traits is a must in fruitful breeding programme. As a biometrical tools generation mean analysis provides the estimates of main gene effects (additive and dominance) along with epistasis and helps in understanding the nature of gene effects involved in different trait concern. The present study revealed the adequacy of additive-dominance model for A, B and C for most of the traits in both of the crosses. It indicated that most of the traits under study governed by only additive and dominance genes. Potence was non-significant for different traits and crosses. The c2 value was significant for PHF, DT50%F and PHH in both of the crosses and for NL50%F in cross 1 which expressed the involvement of epitasis gene effects for these traits. Component of variation D and H for all the traits in both of the crosses exhibited positive to negative values. Negative sign was due to large sampling variation and genotype-environment interaction. In all cases low to complete dominance were found whereas, effective factors K was always less than 1.


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