Vegetos
(An International Journal of Plant Research & Biotechnology)
Studies on genetic variability and character association for green pod yield and component horticultural traits in garden pea (Pisum sativum L.) under North-Western Himalayas
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Research Articles | Published: 09 April, 2025
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Keywords: Variability, Correlation, Genetic advance, Heritability, Path coefficients
Abstract
The understanding of genetic variability in germplasm is essential for initiating any breeding programme. The present study was carried out to meet this objective by studying diverse garden pea panel of 56 genotypes during winters 2019-20 and 2020-21 at Palampur following randomized block design, replicated thrice for pod yield and its related attributes. The analysis of variance revealed significant differences among the genotypes for yield and yield contributing traits. Moderate phenotypic and genotypic coefficients of variation were observed for pod yield, pods/plant, average pod weight, harvest duration, pod length, seeds/pod, plant height, and ascorbic acid. High heritability coupled with high genetic advance was recorded for pod yield indicating the importance of additive gene action while high heritability along with moderate genetic advance was observed for first flower node, pod length, pod width, seeds/pod, average pod weight, internodal length, plant height and sugar content that signify the role of non-additive gene effects. Further, pod yield showed positive correlation at both phenotypic and genotypic levels with pods/plant, shelling (%), seeds/pod, average pod weight, pod length and harvest duration that advocate selection based on these traits to obtain higher yield. Path analysis revealed maximum positive direct effects of pods/plant and average pod weight on pod yield/plant at both phenotypic and genotypic levels. Keeping in view the variability studies, selection based on pods/plant, average pod weight, harvest duration, branches/plant, nodes/plant and internodal length would be most rewarding to evolve high yielding genotypes.
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Author Information
Department of Vegetable Science & Floriculture, Chaudhary Sarwan Kumar Himachal Pradesh Agricultural University, Palampur, India