Genetic relatedness and distribution pattern of yield attributing traits in horsegram mutants
2021
Pushpayazhini, V. | Sudhagar, R. | Vanniarajan, C. | Rēṇukā, Ār. | Hepziba, S Juliet
A total of 110 mutants derived from two horsegram varieties PAIYUR 2 and CRIDA 1–18 R through 32 mutagenic combinations were evaluated during rabi,2020 to ascertain the breeding value. The analyses like trait dependence, character interrelationship, and nature of gene action were done by utilizing data on 11 yield attributing quantitative traits. Yield per plant recorded a highly signifcant positive association with the number of primary branches per plant (0.895), plant height (0.705), the number of pods per plant (0.703), days to maturity (0.568), the number of pods per cluster (0.444), the number of clusters per plant (0.332), the number of seeds per pod (0.299), and days to 50% fowering (0.207). The character number of pods per plant (0.699), days to 50% fowering (0.550), plant height (0.425), the number of seeds per pod (0.377), the number of primary branches per plant (0.286), 100-seed weight (0.271) and days to maturity (0.175) recorded the highest positive direct effect on yield per plant. Based on the estimates of coefcients of skewness and kurtosis, it is ascertained that the traits number of clusters per plant (0.81), the number of primary branches per plant (0.96), and the number of pods per plant (0.55) are governed by complementary gene action. This gene action suggests further intense selection for genetic gain.
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