Formerly International Journal of Basic and Applied Agricultural Research

Nature and magnitude of heterosis for yield and related traits in rice (Oryza sativa L.)

Shilpi Vikas Teotia And Surendra Singh
Pantnagar Journal of Research, Volume - 18, Issue - 1 ( January-April, 2020)

Published: 2020-04-30

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Abstract


Heterosis was studied for 12 characters in 60 crosses developed by crossing 20 lines and tree testers (2 CMS & 1 TGMS) a line x tester mating design. Promising hybrids expressed highest SCA effects for grain yield were obtained with general combiners involved into different parental combinations of UPR 3403-4-1-1 x UPRI 95-167 (L1 x T1), UPRI 2008-62 x UPRI 95-17A (L20 x T2) and UPR 3428-4-1-1 x UPRI 95-17A(L11 x T2). The per cent estimate for standard heterosis for grain yield was recorded highest for UPRI 2008-39 x PUSA6A(L19 x T3) followed by UPR 3403-4-1-1 x UPRI 95-17A(L1 x T1) and UPRI 2008-62 x PUSA6A (L20 x T3). These identified hybrids have potential and can be channelized in rice hybrid development programme after further testing in station/multiplications trials.


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