文献类型： 外文期刊
作者： Chen, Junxiao 1 ; Liu, Kai 1 ; Zha, Wenjun 1 ; Zhou, Lei 1 ; Li, Ming 1 ; Xu, Huashan 1 ; Li, Peide 1 ; Chen, Zhijun 1 ; Yang, Guocai 1 ; Chen, Pingli 2 ; Li, Sanhe 1 ; You, Aiqing 1 ;
作者机构： 1.Hubei Acad Agr Sci, Food Crops Inst, Hubei Key Lab Food Crop Germplasm & Genet Improve, Wuhan, Peoples R China
2.Guangdong Acad Agr Sci, Guangdong Key Lab New Technol Rice Breeding, Rice Res Inst, Guangzhou, Peoples R China
期刊名称：PLOS ONE （ 影响因子：3.752； 五年影响因子：4.069 ）
ISSN： 1932-6203
年卷期： 2021 年 16 卷 11 期
页码：
收录情况： SCI
摘要： Grain shape strongly influences the economic value and grain yield of rice. Thus, identifying quantitative trait loci (QTLs) for grain shape has been a longstanding goal in rice genetic research and breeding programs. Single nucleotide polymorphism (SNP) markers are ubiquitous in the rice genome and are more abundant and evenly distributed on the 12 rice chromosomes than traditional markers. An F-2 population was genotyped using the RICE6K SNP array to elucidate the mechanisms governing grain shape. Thirty-five QTLs for grain shape were detected on 11 of 12 chromosomes over 2 years. The major QTL cluster qGS7was detected in both years and displayed strong genetic effects on grain length and width, showing consistency with GL7/GW7. Some minor QTLs were also detected, and the effects of four QTLs on seed size were then validated using BC1F6 populations with residual heterozygous lines in each QTL region. Our findings provide insights into the molecular basis of grain shape as well as additional resources and approaches for producing hybrid high-yield rice varieties.
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