Variability for bruchid resistance in blackgram (Vigna mungo (L.) Hepper)
A laboratory experiment was conducted to estimate the variability parameters for traits related to bruchid infestation in various blackgram genotypes at National Pulses Research Center,Vamban. High phenotypic coefficient of variation (PCV), genotypic coefficient of variation (GCV) and heritability and genetic advance were noticed for the traits viz., seed damage (%) and number of adults emerged at various days after the release of adults emergence (i.e adult emergence and developmental period). Prolonged developmental period with less number of adults may be due to antibiosis. The results indicated that sufficient level of variability for the traits related to bruchid infestation was available in the study material. Hence selection can be practiced to select bruchid resistant and high yielding genotypes in study material.
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