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1994•Madras Agricultural JournalOpen access

HETEROSIS FOR YIELD AND ITS COMPONENTS IN SHORT DURATION RICE (Oryza sativa L.) HYBRIDS

DHANAKODI C.V, M. Subramanian

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Abstract

A study was taken up to assess the extent of heterosis for yield components in a 4 x 4 diallel. Substantial heterosis was noticed for all the characters studied except 100- grain weight. The hybrid Co 41 x IR 50 was identified to be superior by recording maximum heterosis for grain yield besides heterosis for four other characters namely, plant height, ear bearing tillers, ear length and grain number.

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A study was taken up to assess the extent of heterosis for yield components in a 4 x 4 diallel. Substantial heterosis was noticed for all the characters studied except 100- grain weight. The hybrid Co 41 x IR 50 was identified to be superior by recording maximum heterosis for grain yield besides heterosis for four other characters namely, plant height, ear bearing tillers, ear length and grain number.

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Available abstract

A study was taken up to assess the extent of heterosis for yield components in a 4 x 4 diallel. Substantial heterosis was noticed for all the characters studied except 100- grain weight. The hybrid Co 41 x IR 50 was identified to be superior by recording maximum heterosis for grain yield besides heterosis for four other characters namely, plant height, ear bearing tillers, ear length and grain number.

Key concepts: Heterosis, Diallel cross, Hybrid, Oryza sativa, Agronomy, Grain yield, Yield (engineering), Biology

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