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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2021, Volume : 9, Issue : 2
First page : (180) Last page : (187)
Article doi: : http://dx.doi.org/10.18782/2582-2845.8639

Correlation, Path Analysis, Heterosis and Inbreeding Depression for Yield and Quality Traits of Okra Lines and their Hybrids

Bharathkumar M. V.^1*, Surender Kumar Dhankhar² and Mohinder Singh Dahiya^3
1Ph. D. Scholar, CCS HAU, Hisar, Haryana
²Principal Scientist, Vegetable Science, CCS Haryana Agricultural University, Hisar, Haryana
³Principal Scientist (Rtd.), Vegetable Science & Ex-Registrar,
CCS Haryana Agricultural University, Hisar, Haryana
*Corresponding Author E-mail: bmvhort@gmail.com
Received: 25.02.2021 | Revised: 31.03.2021 | Accepted: 7.04.2021 

 ABSTRACT

Four diverse advanced lines of okra namely HB 1157, HBT-12, HBT 24 and MR 41 were crossed to get four hybrids Viz., HB 1157 × HBT 24, HB 1157 × MR 41, HBT-12 × HBT 24 and HBT-12 × MR 41. Data generated from these parental lines and their hybrids were analysed to estimate the correlation, path analysis, heterosis and inbreeding depression in okra. Correlation coefficients showed that the selection for number of fruits, branches per plant, plant height, fruit weight and fruit length could improve the fruit yield positively, while inter-nodal length had negative association. Path coefficient analysis revealed that number of fruits per plant, fruit weight, fruit length and plant height had shown positive direct effects, whereas inter-nodal length exhibited highest negative direct effects on fruit yield per plant. Highly significant and positive heterobeltiosis was displayed for yield per plant in all the crosses ranging from 24% (HB 1157 × HBT 24) to 55.12% (HB 1157 × MR 41). Highest per se fruit yield of 275g per plant was estimated in HB 1157 × MR 41 followed by HBT-12 × MR 41 (262g/plant), HBT-12 × HBT 24 (233g/plant) and HB 1157 × HBT 24 (221g/plant). Similarly, HBT-12 × MR 41 took maximum number of days for first appearance of YVMV disease (67.67) followed by HB 1157 × MR 41, which acts as tolerance to YVMV in okra.

Keywords: Okra, Heterosis, YVMV, Correlation, Inbreeding depression.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Bharathkumar, M. V., Dhankhar, S. K., & Dahiya, M. S. (2021). Correlation, Path Analysis, Heterosis and Inbreeding Depression for Yield and Quality Traits of Okra Lines and their Hybrids, Ind. J. Pure App. Biosci. 9(2), 180-187. doi: http://dx.doi.org/10.18782/2582-2845.8639