高抗性淀粉水稻新品种优糖稻2号的选育及其特征特性

优糖稻2号系由上海市农业科学院作物育种栽培研究所利用系谱法选育而成的一个富含抗性淀粉的功能水稻新品种,2019年通过上海市农作物品种审定委员会审定。优糖稻2号抗性淀粉含量高达13.1%。抗性淀粉是在健康者小肠中不被吸收的淀粉及其降解产物的总称,具有控制血糖、预防肠道疾病、控制体质量、促进维生素和矿物质吸收等重要的生理功能。本文介绍了优糖稻2号的选育经过、产量表现、主要特征特性及栽培技术要点。

Breeding and Characteristics of New Rice Variety Youtangdao 2 with High Resistant Starch

Youtangdao 2 is a new functional japonica rice variety with high resistant starch,which was bred by Crop Breeding and Cultivation Research Institute,Shanghai Academy of Agricultural Sciences by pedigree method.Youtangdao 2 was registered and released by Shanghai Crop Variety Approval Committee in 2019.The content of resistant starch of Youtangdao 2 is as high as 13.1%.Resistant starch is defined as the sum of starch and products of starch degradation not absorbed in the small intestine of healthy indi-viduals.It has the ability to control blood glucose,prevent intestinal diseases,control body weight,promote vitamin and mineral absorption and other important physiological functions.This paper introduced its breeding procedure,seed production,main characteris-tics,and cultivation techniques points.