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Studies on crosses between dwarf and tall indica rice varieties


, : Studies on crosses between dwarf and tall indica rice varieties. Madras Agricultural Journal 60(2): 104-110

F1s from crosses of the dwarf varieties IR8 and Taichung Native 1 with the tall varieties ADT27 Co29, TKM6, Co32 and ASD2 showed heterosis for plant height, ear number per plant, spikelet sterility and yield of grain or straw. The F2s segregated in the ratios of 9 spreading : 7 erect habit and 9 brown : 7 straw-cooured husk. Plant height, foliage colour, apiculus pigmentation and grain colour are each apparently controlled by more than two genes.

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