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Identification and verification of quantitative trait loci for eating and cooking quality of rice (Oryza sativa)

文献类型： 外文期刊

作者： Zhang, Hui 1 ; Zhu, Yu-Jun 2 ; Fan, Ye-Yang 2 ; Huang, Ting-Xu 4 ; Zhang, Jian-Fu 4 ; Xie, Hua-An 1 ; Zhuang, Jie-Yun 2 ;

作者机构： 1.Fujian Agr & Forestry Univ, Coll Crop Sci, Fuzhou, Fujian, Peoples R China

2.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou, Zhejiang, Peoples R China

3.China Natl Rice Res Inst, Chinese Natl Ctr Rice Improvement, Hangzhou, Zhejiang, Peoples R China

4.Fujian Acad Agr Sci, Rice Res Inst, Fuzhou, Fujian, Peoples R China

5.Fujian Acad Agr Sci, Fuzhou Branch, Natl Ctr Rice Improvement, Fuzhou, Fujian, Peoples R China

关键词： alkali spreading value; amylose content; gel consistency; quantitative trait locus; residual heterozygote; rice (Oryza sativa)

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

ISSN： 0179-9541

年卷期： 2019 年 138 卷 5 期

页码：

收录情况： SCI

摘要： This study was conducted to identify new quantitative trait loci (QTLs) that have stable effects for eating and cooking quality (ECQ) of rice. Three recombinant inbred line populations of indica rice were each planted in two years. Three traits for ECQ, amylose content (AC), gel consistency (GC) and alkali spreading value (ASV), were measured for QTL analysis. A total of 13 QTLs were detected, including four for AC, six for ASV and three for GC. Two QTLs, qGC4 in the interval RM16252-RM335 on the short arm of chromosome 4 and qGC6.2 in the Alk region, were validated in a population derived from a residual heterozygote that was homozygous at the major locus Wx. In the absence of segregation at the Wx locus, qGC4 and qGC6.2 had additive effects of 2.46 and 8.18 mm, respectively, offering a potential for improving GC property of rice varieties. Comparison between qGC4 and previous results suggests that qGC4 is likely a new QTL for GC, providing a candidate for gene cloning and functional characterization.

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