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Electronic Journal of Plant Breeding
Year : 2012, Volume : 3, Issue : 2
First page : ( 818) Last page : ( 824)
Online ISSN : 0975-928X.

Genetic diversity and path coefficient analysis in Pigeonpea [Cajanus cajan (L.) Millsp.] germplasm accessions of Bastar origin

Nag Yogesh Kumar*, Sharma R.N.

Department of Genetics and Plant Breeding, Indira Gandhi Krishi Viswavidyalaya, Raipur (C.G.).

*Email: yshnag87@gmail.com

Online published on 16 July, 2012.

Abstract

Forty five pigeonpea germplasms were studied for path coefficient and genetic divergence. The path coefficient analysis revealed that, the number of pod clusters plant −1 had the highest direct effect on seed yield. Whereas, the characters namely number of pods plant−1 and days to maturity had the highest indirect effect on seed yield via the characters number of pods plant−1 and days to 50% flowering respectively. Cluster analysis showed existence of considerable diversity in pigeonpea germplasm accessions. The maximum inter cluster distance was observed between cluster I and IV. Hence, genotypes of cluster IV may be crossed with the genotypes of to cluster I to obtain high heterotic response and desirable segregants.

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Keywords

Divergence analysis, germplasm, path analysis, pigeonpea.

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