Article

Genetic variability and association studies in pod and seed traits of Pongamia pinnata (L.) Pierre in Haryana, India. Genet Resour Crop Evol

Genetic Resources and Crop Evolution (Impact Factor: 1.46). 11/2007; 54(8):1827-1832. DOI: 10.1007/s10722-006-9204-3

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 40CPTs for pod and seed traits. Maximum 100-seed weight (186.80g) and pod-weight (403.94g)
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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Available from: Rajender Singh Beniwal, May 18, 2015
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    • "A large proportion of existing trees do not flower at all and commercially attractive levels of fruiting are observed in only a small fraction of trees. However, there is a large phenotypic diversity in this species, thus providing an opportunity for genetic improvement (Kaushik et al. 2007). More recently, initiatives have been taken towards identification of superior genotypes and their characterization. "
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    DESCRIPTION: Isolation and characterization of a first set of nine polymorphic microsatellite loci in Pongamia pinnata (Fabaceae)
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    • "The outsourcing nature of species creates a high level of heterogeneity in population. Hence, a wide range of molecular diversity and variability for seed morphology, oil content, seed biochemicals, karanjin content exists within species (Jaisankar et al. 2014; Rao et al. 2011; Kaushik et al. 2007; Sharma et al. 2011, 2014; Pavithra et al. 2014). Further, propagation of M. pinnata through seed possesses several problems. "
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  • Source
    • "A large proportion of existing trees do not flower at all and commercially attractive levels of fruiting are observed in only a small fraction of trees. However, there is a large phenotypic diversity in this species, thus providing an opportunity for genetic improvement (Kaushik et al. 2007). More recently, initiatives have been taken towards identification of superior genotypes and their characterization. "

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