Phenotypic Diversity among the Virginia Breeding Lines of Groundnut
2022
Gangadhara, K | Gor, H K
An attempt has been made to study the genetic variability and classifying the 210 Virginia breeding lines along with fivechecks evaluated across two years. Significant differences observed among Virginia breeding lines for all traits exceptdays to maturity. Moderate heritability coupled with high genetic advance as per cent of mean for hundred pod weight andhundred kernel weight suggesting the additive gene control and effectiveness for selection. Low heritability coupled withlow genetic advance as per cent of mean for days to flowering and kernel characteristics suggests more environmentalinfluence on their expression. Pod yield per plant correlated significantly and positively with primary branches per plant,hundred pod weight and kernel weight, SMK, shelling out turn, kernel length and kernel width. Cluster analysis basedon Euclidean distance using Wards criteria, grouped 210 Virginia bunch breeding lines and four checks into three majorclusters. Three major clusters consist each of 119 breeding lines in cluster I, 44 breeding lines and three checks in clusterII and 47 breeding lines and two check varieties in cluster III, respectively. Cluster I and cluster II contains high yieldingbreeding lines, where as cluster III had low yielding breeding lines. Sub cluster IIA had breeding lines with higher podyield and kernel characteristics, which will be useful donors for Virginia groundnut improvement.
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