Abstract
This study was carried out to determine content of sugars, water soluble polysaccharides (WSP) and starch during the first 4 weeks after pollination of sugary. (su) and shrunken (shr-1s, shr-1a and shr-2) mutants of rice. The content of reducing sugars and sucrose in shr-1s, shr-1a and shr-2 mutants was high through early stages of endosperm development. Sugary mutant possessed higher WSP than the other mutants. Starch content in su, shr-1a and shr-2 reduced to about one-half of the parent cultivar. The starch reduction in shr-1s genotype was in-between the other mutant lines and the parent cultivar. These results indicated that the three loci affect carbohydrate production in the endosperm of rice.
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