Variability and correlation studies in grasspea (Lathyrus sativus L.)
1996
Kumar, S. | Dubey, D.K. (Janata Mahavidyalaya, Ajitmal (India). Dept. of Botany)
Coefficients of variability and correlation between yield and its components were worked out at phenotypic, genotypic and environmental levels in 25 induced mutants of grasspea. Yield per plant, pods per plant and seeds per plant were more variable than the other traits studied. Seed yield showed significant positive correlations with number of pods per plant, number of seeds per pod and number of seeds per plant. Length of main branch, number of primary branches, nodes of main branch and internode length also showed positive correlations with yield, while 100-seed weight showed significant positive correlation with yield at the genotypic level only. Days to flowering was negatively correlated with yield at all levels. Genotypic and phenotypic correlations between all the traits were in the same direction and similar in magnitude, while environmental correlations were higher than the respective phenotypic and environmental correlations. There were significant positive environmental correlations of yield with number of pods per plant, number of seeds per plant and number of seeds per pod. Various yield-contributing traits also showed significant positive associations among themselves
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