Changes in Rice Grain Quality of Indica and Japonica Type Varieties Released in China from 2000 to 2014.

ABSTRACT: China is the first country to use heterosis successfully for commercial rice production. This study compared the main quality characteristics (head rice rate, chalky rice rate, chalkiness degree, gel consistency, amylose content, and length-to-width ratio) of 635 rice varieties (not including upland and glutinous rice) released from 2000 to 2014 to establish the quality status and offer suggestions for future rice breeding for grain quality in China. In the past 15 years, grain quality in japonica rice and indica hybrid rice has improved. In japonica rice, inbred varieties have increased head rice rates and decreased chalkiness degree over time, while hybrid rice varieties have decreased chalky rice rates and chalkiness degree. In indica hybrid rice, the chalkiness degree and amylose conte

SUBMITTER: Feng F 

PROVIDER: S-EPMC5671604 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature