Correlation co-efficient and Path co-efficient analyses for grain yield and its related traits in guar (Cyamopsis tetragonoloba L.) lines
Author(s)
Muhammad Shakir , Humera Razzaq , Lal Hussain Akhtar , Qasim Farooq , Hina Saleem , Aisha Sodagar , Tooba Zafar ,
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Abstract
In the present study evaluation of twenty-eight cluster bean lines were done at research area of Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan. The research trial was conducted in RCBD with three replications during kharif- 2019. Genotypic and phenotypic correlation between the characters and their direct and indirect effect were estimated. Significant correlations at both genotypic and phenotypic level was observed in days to flowering, days to pods formation, days to 50% maturity, plant height, branches/plant, clusters/plant, pods/plant, pod length, days to harvesting, 100-seed weight indicated positive correlation with pods per plant (0.012), pod length (0.168), grains/pod (0.168), cluster/plant (0.014), grain yield/plant (0.072) and galactomannan content (0.072) at phenotypic and genotypic level. Seed yield/plant revealed positive correlation with plant height (0.414), cluster/plant (0.602), pod/plant (0.806), pod length (0.532), grains per pod (0.412), 100 grain weight (0.072) and protein content (0.137) at phenotypic and genotypic level. Whereas data were subjected to path analysis revealed that days to flowering, days to pod formation, clusters/plant, pods/plant, grains/pod and galactomannan content had direct positive effect on seed yield/plant demonstrated that these were the main contributing characters to yield/plant.
Keywords
Guar [(Cyamopsis tetragonoloba (L.)], Genotypic correlation, Phenotypic correlation, Path analysis
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