Genetic variability and association studies in pod and seed traits of <Emphasis Type="Italic">Pongamia pinnata</Emphasis> (L.) Pierre in Haryana,India |
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| Authors: | Naresh Kaushik Sushil Kumar Krishan Kumar R S Beniwal N Kaushik S Roy |
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| Institution: | (1) Forestry, CCS HAU Regional Research Station, Bawal, Rewari, Haryana, 123501, India;(2) Forestry, CCS HAU, Hisar, Haryana, 125004, India;(3) Biotechnology, The Energy Resource Institute, New Delhi, India |
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| Abstract: | Forty Candidate Plus Trees (CPTs) of Pongamia pinnata were selected based on the morphometric traits to identify suitable seed sources with high oil content and for production
of quality seedlings for mass afforestation in different forestry and agroforestry programmes. Significant genetic variability
and association were recorded among 40 CPTs for pod and seed traits. Maximum 100-seed weight (186.80 g) and pod-weight (403.94 g)
was recorded in CPT-33, while CPT-18 showed maximum oil content (44.07%). In general, phenotypic coefficient of variation
was higher than genotypic coefficient of variation indicating the predominant role of environment. High heritability (broad
sense) and genetic gain observed for pod–seed ratio (99.00%, 87.78%), 100-seed weight (100.00%, 66.99%) and 100-pod weight
(98.00%, 57.38%), respectively indicate additive gene action. Seed weight and pod weight showed positive and significant correlation
with oil content. CPTs 18, 20, 33, 13 and 29 were found to be the best on the basis of oil content and pod–seed characters. |
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| Keywords: | Genetic gain Genotypic coefficient of variation Heritability Karanja Leguminosae Phenotypic coefficient of variation Pongamia pinnata |
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