Evaluation of genetic variability, correlation and path coefficients analysis for yield attributing traits in field pea [Pisum sativum (L.) var. arvense]
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Date
2017-06-30
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Res. on Crops 18 (2) : 316-321 (2017)
Abstract
An experiment was conducted in randomized complete block with 12 field pea
genotypes to study the genotypic and phenotypic coefficients of variation, heritability,
genetic advance, correlation among the yield contributing traits and their effect on number
of seeds per pod of field pea. The phenotypic correlation coefficient (PCV) values were
marginally bigger than genotypic correlation coefficient (GCV), revealing tiny sway of
environment in character expression. High heritability coupled with high genetic advance
and high GCV were observed for length of branch from main axis, number of seeds/plant
and weight of 100 seeds indicating the multitude of additive gene action. Selection stranded
on these characters will be worthwhile. Results of genotypic and phenotypic correlation
coefficients showed significant positive correlation of stem circumference, number of seeds/
plant, number of pods/plant, weight of 100 seeds, number of seeds/pod with each other
and other yield attributes. The component characters and path-coefficient analysis revealed
positive direct effect of plant height at maturity and number of leaves/plant on the number
of seeds/pod. The analysis suggests that the above mentioned parameters were sufficient
for direct selection of genotypes for yield attributing characters. However, the high residual
effect and relatively moderate level of genetic parameters revealed the requirement of more
number of yield attributing parameters under consideration for improvising in crop breeding
pipeline of field pea.
Description
Res. on Crops 18 (2) : 316-321 (2017)
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Citation
Res. on Crops 18 (2) : 316-321 (2017)