Legume Research
Chief EditorJ. S. Sandhu
Print ISSN 0250-5371
Online ISSN 0976-0571
NAAS Rating 6.80
SJR 0.391
Impact Factor 0.8 (2024)
Chief EditorJ. S. Sandhu
Print ISSN 0250-5371
Online ISSN 0976-0571
NAAS Rating 6.80
SJR 0.391
Impact Factor 0.8 (2024)
Genetic study and selection indices for grain yield of mungbean
Submitted05-05-2016|
Accepted16-07-2016|
First Online 30-03-2017|
Mungbean (Vigna radiata L.) genotypes along with two parents were studied to assess the magnitude of genotypic variability, heritability and selection indices among the yield components and their direct and indirect effects on grain yield. On the basis of genetic variability, all the traits exhibited high heritability estimates coupled with high genetic advance as percent of mean (h2³ 60%, GAM³20 %) except 100 grain weight (h2 = 0.51, GAM= 8.0 %), indicating the preponderance of additive gene action. Biological yield/plant and harvest index had the most positive direct effects (1.448, 1.144, respectively) on grain yield/plant, indicating these traits synergistically affect photosyntates. Based on Smith-Hazel indices the highest genetic advance (17.56%) in grain yield/plant obtained on linear combination of traits such as days to 50% flowering, days to maturity, plant height, pod length, grains/pod and biological yield/plant (X2X3X4X7X8X10) accomplished through a completely new selection-index in which economic weight of each traits were equally distributed, suggesting that these parameters may be considered as prime traits during the course of selection to realize higher yield potential in green gram.
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