Heterosis Studies on Grain Yield and Yield Attributing Traits in Rice  (Oryza sativa L.)

C. Sucharitha; K. Sukumar; B. Laxmi Prasanna

doi:10.9734/jabb/2024/v27i121770

Research Article Open access CC BY 4.0

Heterosis Studies on Grain Yield and Yield Attributing Traits in Rice (Oryza sativa L.)

C. Sucharitha, K. Sukumar, B. Laxmi Prasanna

Journal of Advances in Biology & Biotechnology · pp. 230–247 · Published 14 Dec 2024

10.9734/jabb/2024/v27i121770

Abstract

The research programme was carried out at Agricultural Polytechnic, Polasa, Jagtial during Kharif, 2021 and Rabi, 2021-22. Population is growing at rapid pace and hence, there is a definite need for the development of hybrids with better heterosis for yield and yield attributes. Here, Eight lines and three testers were employed to generate Twenty four experimental hybrids using line x tester mating design and the resultant hybrids were evaluated in Randomized Block Design. Better parent heterosis for grain yield varied from -95.62% (JMS 13A x JGL 33124) to 40.98% (CMS 46A x KNM 7787). Four hybrids viz., CMS46A x KNM 7787(40.98), JMS 11A x KNM 7787 (26.16), CMS23A x KNM 7787 (13.54) and CMS 46A x JGL 33124 (11.13) exhibited significantly positive heterosis over the better parent.

Paddy lines testers hybrids heterosis grain yield yield attributes average heterosis heterobeltiosis standard heterosis

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C. Sucharitha, K. Sukumar, B. Laxmi Prasanna (2024). Heterosis Studies on Grain Yield and Yield Attributing Traits in Rice (Oryza sativa L.). Journal of Advances in Biology & Biotechnology , 230–247. https://doi.org/10.9734/jabb/2024/v27i121770

Affiliations

C. Sucharitha — Professor Jayashankar Telangana Agricultural University, India.
K. Sukumar — Professor Jayashankar Telangana Agricultural University, India.
B. Laxmi Prasanna — Professor Jayashankar Telangana Agricultural University, India.

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