江苏省农业科技自主创新基金项目[CX(13)2019]
谷蛋白是水稻种子中含量最高的贮藏蛋白,占种子总蛋白的70%以上,是稻米蛋白中可供人体吸收的主要成分。低谷蛋白稻米可以满足肾脏病人和并发肾脏机能损害的糖尿病患者在蛋白代谢方面的特殊需求,因此培育适合肾脏病人食用的低谷蛋白品种已成为水稻遗传改良的重要目标。本研究通过引进日本低谷蛋白品种LGC-1,于2009年配置其与江苏高产优质粳稻“武育粳3号”杂交组合,经过6代自交和农艺性状筛选结合分子标记辅助选择,于2013年选育出3个低谷蛋白新品系。经分子标记检测、种子总蛋白SDS-PAGE分析和谷蛋白含量测定表明,这三个品系谷蛋白含量均降至LGC-1水平,显著低于普通推广品种,且农艺性状表现优异,为水稻低谷蛋白新品种选育提供了优良的新种质。
Glutelin is the most abundant storage protein in rice seeds, accounting for over 70% of the total seed protein, as well as the major rice protein absorbed. Rice with low glutelin content (LGC) is suitable for the special needs of patients suffering from diabetes and kidney failure. To improve the LGC rice variety, LGC-1, a LGC variety from Japan, was used to cross with “Wuyujing 3”, a japonica variety with high yield and quality in Jiangsu province. Three new LGC rice strains (F6 generation) with elite agronomic traits were obtained by agronomic traits selection and marker-assisted selection in 2013. SDS-PAGE analysis and glutelin content measurement showed that glutelin contents of the 3 new strains were reduced to LGC-1 level, significantly lower than ordinary commercial varieties.
张云辉,张所兵,周金云亮,等.水稻低谷蛋白创新种质的选育和鉴定[J].植物遗传资源学报,2015,16(1):158-162.
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