Starch accumulation characteristics of large-seed rice | 水稻大粒种质淀粉积累特性研究
2010
Qiu Xiankun, Agricultural College of Yanbian University, Longjing (China) | Liu Xianhu, Agricultural College of Yanbian University, Longjing (China) | Xu Mingzi, Agricultural College of Yanbian University, Longjing (China)
[Objective] The paper aimed to provide the theoretical foundation for rational using the large-seed rice. [Method] Large-seed rice 31C122、31C125 ( nearly 50 g / 1000- weight) and normal rice varieties including Jiyujing and Fuyu 333 as materials, the accumulative process for sugar and starch in seeds was compared and analyzed. [Result] Sugar content of inferior grains was higher than superior grains in all tested materials, sugar content of large seeds was lower than conventional ones；starch content of superior grains was higher than inferior grains, starch content of conventional ones was higher than large-seed rice, amylopectin content was higher than amylose content in all tested materials, amylose content of large-seed rice was lower than conventional ones；the peak of accumulation starch for superior grains of large-seed rice was later than conventional ones，inferior grains advanced；active saving period of starch for superior grains of large-seed rice was longer than conventional ones. [Conclusion] The quality of large-seed rice was better than conventional ones.
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