核农学报2018，Vol.32Issue(5)：892-899,8.DOI:10.11869/j.issn.100-8551.2018.05.0892
早籼稻Wx基因多态性与直链淀粉含量及RVA谱的关系
The Relationship Between Polymorphism of Wx Gene and Amylose Content, RVA Profile Characteristics of Early Indica Rice
摘要
Abstract
To explicit the polymorphism distribution of Wx gene which is the main genes for AC in Zhejiang early indica rice and its influence on AC and RVA,total of 37 early indica rice varieties (lines) were selected as materials to detect the Wx genotype,the amylose content (AC) and RVA profile characteristics,and the effects of different Wx genotypes on AC and RVA profiles in rice and the correlation between AC and RVA were analyzed.The result showed that the AC of Wxa genotype varieties (lines) presented a medium or high level(23.38％ ～ 28.93％),while the AC of Wxb genotype varieties (lines) presented a low level (1 1.61％ ～ 17.77％).Meanwhile,Wxin genotype wasn't detected in the 37 materials.The RVA profile characteristics were significant related with Wx genetype,and the RVA profile characteristics differed within variety (line) with different Wx genotype background,the SBV of Wxa genotype was positive while the SBV of Wxb genotype was negative.According to different Wx genotype,the CPV and BDV of each variety (line) distributed into non-overlapping areas.Wxa genotype presented a low BDV and a high CSV;While Wxb genotype presented a high BDV and a low CSV.The correlation of AC and RVA profile characteristics reached extremely significant level when not distinguishing the Wx genotype background,while the correlation of AC and RVA profile characteristics of the variety (line) was not significant within the same Wx genotype.The results can be used to provide a certain strategy to regulate the AC in early indica rice by mediating Wx allelic genes and screen high-quality edible early indica rice based on the RVA profile characteristics.关键词
早籼稻/Wx基因型/直链淀粉含量(AC)/淀粉粘滞性(RVA)谱Key words
early indica rice/Wx genotype/amylose content(AC)/RVA profile引用本文复制引用
张永鑫,郑伟,刘景淼,李道品,刘永安,周海平..早籼稻Wx基因多态性与直链淀粉含量及RVA谱的关系[J].核农学报,2018,32(5):892-899,8.基金项目
浙江省农业新品种选育重大科技专项(2016C02050-4),温州市种子种苗科技创新专项(Z20160001,Z20170002),温州市粮食作物种质创新与新品种选育科技创新团队项目(C20150001) （2016C02050-4）
