Study of genetic variability and correlations in selected groundnut genotypes.
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Date
2012-01
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Abstract
Genetic variation and association among nine characters were studied in eighteen
selected groundnut genotypes. Analysis of variance revealed highly significant differences
among the genotypes for all the characters studied. The PCV was generally higher than the
GCV for all the characters but in some cases, the two values differed slightly. The lowest
values were shown by SMK percent and shelling percentage and the highest values were
shown by pod yield per plant, kernel yield per plant, test weight and three diseases. High
heritability along with the GAM was high for pod yield per plant, kernel yield per plant, test
weight, shelling percentage and three diseases, indicated the importance of additive gene
action and the ample scope for improvement in these traits through simple selection. The
correlation study revealed that pod yield per plant had significant positive association with
kernel yield per plant, shelling percentage and SMK percent at both genotypic and phenotypic
levels. Aspergillus seed colonization exhibited significant desirable negative association with
test weight revealing that the resistant genotypes in general had higher seed size.
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Keywords
Genetic variability, heritability, correlations, Aspergillus seed colonization and groundnut
Citation
Narasimhulu R, Kenchanagoudar P V, Gowda M V C. Study of genetic variability and correlations in selected groundnut genotypes. International Journal of Applied Biology and Pharmaceutical Technology. 2012 Jan-Mar; 3(1): 355-358.