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

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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