Correlation Analysis of Characters of Indica Hybrid Rice with High Content of Amylose  

高直链淀粉含量籼型杂交水稻组合稻米品质相关性分析研究(英文)

作　　者：杨扬[1] 况浩池[1] 曾正明[1] 罗俊涛[1] 陈光珍[1] 何兴材[1] 付均[1] 

机构地区：[1]四川省农业科学院水稻高粱研究所,国家水稻改良中心四川泸州分中心,农业部西南水稻分子生物学与遗传育种重点试验室,四川泸州646100

出　　处：《Agricultural Science & Technology》2013年第3期475-477,共3页农业科学与技术（英文版）

基　　金：Supported by Sichuan Financial Genetic Engineering Program of the 12th Five-year Plan(2011JYGC11-029);National Modern Agricultural and Industrial Technology System;Sichuan Rice Breeding Key Program of the 12th Five-year Plan(2011NZ-0098-1);Luzhou Key Project for Science and Technology Development(2011-N-09)~~

摘　　要：[Objective] The aim was to research and analyze characters and related correlation of indica hybrid rice containing high amylose. [Method] In the research, major characters of 16 species of groups of {ndica hybrid rice and the correlation were explored in rice belts in Sichuan in 2011. [Result] The variation of chalkiness degree was the highest at 26.8%, followed by rate of head rice at 22.89%; varia- tions of head rice rate and chalkiness degree were lower at 0.72% and 2.61%. In addition, rate of unpolished rice was of significantly negative correlation with chalki- ness degree; rate of chalky rice was of extremely positive correlation with chalkiness degree and gel consistency; chalkiness degree was of significantly positive correla- tion with gel consistency; gel consistency was of significantly negative correlation with protein content; amylose content was of insignificant correlation with gel consis- tency （r=0.166 9） of the 16 hybrid groups. These indicated that gel consistency would be still high as the content of amylose grows （AC≥25%）. For example, when the content of anylose in Chuanxiang 29A/Luhui 37, Kangfeng AJ6684, and Lefeng A/SR536 exceeded 27%, the gel consistency was over 80 mm in the research. [Conclusion] The research provides references for improvement of amylose content in breeding hybrid rice.[目的]研究分析高直链淀粉含量籼型杂交水稻组合稻米品质性状及其相关性。[方法]调查分析了2011年四川省水稻区试的16个高直链淀份含量籼型杂交稻组合的主要品质性状及相关关系。[结果]16个组合的品质性状中差异较大的是垩白度,变异系数为26.8%;其次是整精米率,变异系数为22.89%;差异较小的是糙米率和直链淀粉含量,变异系数分别为0.72%和2.61%。糙米率与垩白米率和垩白度呈显著负相关;垩白米率与垩白度和胶稠度呈极显著正相关;垩白度与胶稠度呈显著正相关;胶稠度与蛋白质含量呈显著负相关;16个组合的直链淀粉含量与胶稠度呈不显著正相关(r=0.1669),这可能表明在籼型杂交稻组合中直链淀粉含量达到一定水平(AC≥25%)后,胶稠度同样可以达到较高值,同时高直链淀粉含量与糙米率、整精米率、长宽比、垩白米率、垩白度和蛋白质含量等相关不显著,因此在提高直链淀粉含量的材料和杂交稻组合选择上,可对其它品质性状按育种目标进行独立选择。[结论]该研究结果为进一步提高育种材料和杂交稻组合直链淀粉含量的选育工作提供了参考。

关 键 词：Higher amylose content Indica hybrid rice CHARACTERS Correlaiton analysis 

分 类 号：S511.21[农业科学—作物学]