Studies on Genetic Variability, Correlation and Path Analysis of Yield and Yield Components in Onion

Evaluation of 11 varieties of onion, viz., N-2-4-1, B-780, AFLR, AFDR, AW, C-355, Pusa Red, L-28, Arka Kalyan, Phule Samarth and Local revealed that PCV was greater than GCV for all the traits. High values for heritability, coupled with moderate-to-high GCV and genetic gain, were noticed for neck th...

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Auteur principal:	R Rajya Lakshmi
Format:	article
Langue:	EN
Publié:	Society for Promotion of Horticulture - Indian Institute of Horticultural Research 2015
Sujets:	correlation genetic advance heritability onion variability Plant culture SB1-1110
Accès en ligne:	https://doaj.org/article/0c02d8ae79d94b4aa7fd8411be307f74
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spelling	oai:doaj.org-article:0c02d8ae79d94b4aa7fd8411be307f742021-12-02T12:07:32ZStudies on Genetic Variability, Correlation and Path Analysis of Yield and Yield Components in Onion0973-354X2582-4899https://doaj.org/article/0c02d8ae79d94b4aa7fd8411be307f742015-12-01T00:00:00Zhttps://jhs.iihr.res.in/index.php/jhs/article/view/137https://doaj.org/toc/0973-354Xhttps://doaj.org/toc/2582-4899Evaluation of 11 varieties of onion, viz., N-2-4-1, B-780, AFLR, AFDR, AW, C-355, Pusa Red, L-28, Arka Kalyan, Phule Samarth and Local revealed that PCV was greater than GCV for all the traits. High values for heritability, coupled with moderate-to-high GCV and genetic gain, were noticed for neck thickness, weight and diameter of the bulb and bulb yield, which can be improved by simple selection. Moderate-to-high estimates for heritability accompanied by low GCV/genetic gain were observed for plant height and number of leaves, which warrant heterosis breeding for amelioration. Genotypic correlation coefficients were higher than the corresponding phenotypic ones for most of the characters, reflecting a predominant role of the heritable factors. Yield showed positive association with plant height, neck thickness, weight, length, equatorial diameter of the bulb, both at the phenotypic and genotypic levels. Path coefficient analysis revealed a positive direct effect with regard to plant height, neck thickness, weight, length and diameter of the bulb. Hence, these are the main characters contributing to yield potential of the onion plant. Therefore, it is suggested to lay emphasis on these traits while imposing selection for bulb yield in the onion crop.R Rajya LakshmiSociety for Promotion of Horticulture - Indian Institute of Horticultural Researcharticlecorrelationgenetic advanceheritabilityonionvariabilityPlant cultureSB1-1110ENJournal of Horticultural Sciences, Vol 10, Iss 2, Pp 237-241 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	correlation genetic advance heritability onion variability Plant culture SB1-1110
spellingShingle	correlation genetic advance heritability onion variability Plant culture SB1-1110 R Rajya Lakshmi Studies on Genetic Variability, Correlation and Path Analysis of Yield and Yield Components in Onion
description	Evaluation of 11 varieties of onion, viz., N-2-4-1, B-780, AFLR, AFDR, AW, C-355, Pusa Red, L-28, Arka Kalyan, Phule Samarth and Local revealed that PCV was greater than GCV for all the traits. High values for heritability, coupled with moderate-to-high GCV and genetic gain, were noticed for neck thickness, weight and diameter of the bulb and bulb yield, which can be improved by simple selection. Moderate-to-high estimates for heritability accompanied by low GCV/genetic gain were observed for plant height and number of leaves, which warrant heterosis breeding for amelioration. Genotypic correlation coefficients were higher than the corresponding phenotypic ones for most of the characters, reflecting a predominant role of the heritable factors. Yield showed positive association with plant height, neck thickness, weight, length, equatorial diameter of the bulb, both at the phenotypic and genotypic levels. Path coefficient analysis revealed a positive direct effect with regard to plant height, neck thickness, weight, length and diameter of the bulb. Hence, these are the main characters contributing to yield potential of the onion plant. Therefore, it is suggested to lay emphasis on these traits while imposing selection for bulb yield in the onion crop.
format	article
author	R Rajya Lakshmi
author_facet	R Rajya Lakshmi
author_sort	R Rajya Lakshmi
title	Studies on Genetic Variability, Correlation and Path Analysis of Yield and Yield Components in Onion
title_short	Studies on Genetic Variability, Correlation and Path Analysis of Yield and Yield Components in Onion
title_full	Studies on Genetic Variability, Correlation and Path Analysis of Yield and Yield Components in Onion
title_fullStr	Studies on Genetic Variability, Correlation and Path Analysis of Yield and Yield Components in Onion
title_full_unstemmed	Studies on Genetic Variability, Correlation and Path Analysis of Yield and Yield Components in Onion
title_sort	studies on genetic variability, correlation and path analysis of yield and yield components in onion
publisher	Society for Promotion of Horticulture - Indian Institute of Horticultural Research
publishDate	2015
url	https://doaj.org/article/0c02d8ae79d94b4aa7fd8411be307f74
work_keys_str_mv	AT rrajyalakshmi studiesongeneticvariabilitycorrelationandpathanalysisofyieldandyieldcomponentsinonion
_version_	1718394673051992064

Studies on Genetic Variability, Correlation and Path Analysis of Yield and Yield Components in Onion

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