Effects of Erect Panicle Type Gene of Japonica Rice on Rice Quality

doi:10.7668/hbnxb.2015.01.033

Abstract

Abstract: The near isogenic lines (NILs) with erect panicle type gene were used to study effects of the japonica erect panicle type gene on rice quality traits.Results showed that erect panicle type gene had negative effect on milling quality and appearance quality, it made the head rice percentage decrease obviously, chalky grain percentage, chalkiness degree increase significantly, appearance quality worse.But erect panicle type gene had a positive effect on cooking and eating quality.It made amylose content and gel consistence decrease to a certain extent, taste quality increase significantly.Effects of erect panicle type gene on the nutritional quality were mainly manifested in reducing significantly the content of total protein and glutelin, increasing the content of albumin, globulin and prolamin.Effects of erect panicle type gene on RVA profile characteristics values were not big, it only made cool paste viscosity and setback increase.Variations of quality indexes such as head rice percentage, amylose content, glutelin content, total protein content and cool paste viscosity was larger among different grain position within erect panicle cultivars.Variations of quality indexes such as chalky grain percentage, chalkiness degree, taste quality and gel consistence was larger among different grains within curved panicle cultivars.The main reason of the large difference in some rice qualitative indexes among NILs may be higher grain density and higher ratio of secondary branch grains and total grains.

Key words: Japonica rice, Erect panicle type gene, Near-isogenic lines, Rice quality

CLC Number:

S511.01

CHEN Shu-qiang. Effects of Erect Panicle Type Gene of Japonica Rice on Rice Quality[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(1): 194-201. doi: 10.7668/hbnxb.2015.01.033.

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