Study on Genetic Variability and Heritability in F3 Population of Yard Long Bean (Vigna unguiculata subsp. sesquipedalis (L.) Verdcourt) for Yield and its Components

Noru Raja Sekhar Reddy *

Department of Genetics and Plant Breeding, College of Agriculture, Kerala Agricultural University, Vellayani, Thiruvananthapuram, Kerala-695522, India.

Beena Thomas

Department of Genetics and Plant Breeding, College of Agriculture, Kerala Agricultural University, Vellayani, Thiruvananthapuram, Kerala-695522, India.

Gayathri G

Department of Genetics and Plant Breeding, College of Agriculture, Kerala Agricultural University, Vellayani, Thiruvananthapuram, Kerala-695522, India.

Seeja G

Department of Genetics and Plant Breeding, College of Agriculture, Kerala Agricultural University, Vellayani, Thiruvananthapuram, Kerala-695522, India.

R Beena

Department of Plant Physiology, College of Agriculture, Kerala Agricultural University, Vellayani, Thiruvananthapuram, Kerala -695522 India.

*Author to whom correspondence should be addressed.


Abstract

Yardlong bean (Vigna unguiculata subsp. sesquipedalis (L.) Verdcourt), is significant among legume vegetable crops. Global warming and climate change can significantly impact its cultivation, yield, and production. This study examined the F3 population of five yardlong bean families: F3-1, F3-2, F3-3, F3-4, and F3-5. The findings revealed that all five families exhibited high phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) for yield per plant, indicating substantial variability for these traits in their progenies. For all the characters under consideration, the genotypic variation coefficient was lower than the phenotypic coefficient of variation. High heritability, along with high genetic advance per mean (GAM), was observed in pod weight, pods per plant, yield per plant, and vine length. This indicates significant potential for selecting these traits within these specific populations due to the wide range of variation and the influence of additive gene action. The study will help in selecting traits for further crop improvement programs.

Keywords: Heritability, yardlong bean, phenotypic coefficient of variation (PCV), genotypic coefficient of variation (GCV), genetic advance as percent mean (GAM)


How to Cite

Reddy, Noru Raja Sekhar, Beena Thomas, Gayathri G, Seeja G, and R Beena. 2024. “Study on Genetic Variability and Heritability in F3 Population of Yard Long Bean (Vigna Unguiculata Subsp. Sesquipedalis (L.) Verdcourt) for Yield and Its Components”. International Journal of Plant & Soil Science 36 (7):482-93. https://doi.org/10.9734/ijpss/2024/v36i74756.

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