Volume 5 Issue 1
Performance of some elite mungbean [Vigna radiata (L.) Wilczek] mutant families in M7 generation
Author(s): K. K. SARKAR, A. MAJI AND S. S. ROY
Abstract: Gamma ray induced suspected variants from M6 generation of mungbean cv. K851 were evaluated for yield and its attributing traits with
estimation for different genetic parameters. Eleven mutant families along with control were considered in the present investigation. The
different traits considered were plant height, number of branches per plant, days to first flowering, number of pods per plant, number of
seeds per pod, pod length, pod breadth, test weight, harvest index and yield per plant for evaluation of mutant families. Different genotypic
parameters like, heritability, genetic advance, phenotypic and genotypic coefficient of variation were also estimated to define the nature of
genetic control over the traits. The experiment was laid out in RBD design with three replications during pre kharif 2007. Most of the
treatments except, number of branches per plant showed little environmental influence. From the estimation genetic parameters it was found
that number of pods per plant, harvest index and yield per plant were predominantly governed by additive gene effect whereas, other traits
were controlled by either dominance or higher level of genetic interaction. Two highly yielding mutant families were identified with
concomitant improvement for number of pods per plant and harvest index and these can be forwarded in further advanced generation to
develop stable high yielding mutants.
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