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Pasting properties, grain-filling characteristics and allelic variation linked to the grain quality in diverse rice

文献类型： 外文期刊

作者： Chen, Likai 1 ; Yan, Xianchen 1 ; Wang, Liping 1 ; Gao, Weiwei 1 ; Yang, Jing 1 ; Chen, Siping 1 ; Guo, Zhenhua 3 ; Zhou, 1 ;

作者机构： 1.South China Agr Univ, Natl Engn Res Ctr Plant Space Breeding, Guangzhou 510642, Guangdong, Peoples R China

2.Guangdong Agr Technol Extens Stn, Guangzhou 510520, Guangdong, Peoples R China

3.Heilongjiang Acad Agr Sci, Jiamusi Rice Res Inst, Jiamusi 154026, Heilongjiang, Peoples R China

关键词： Rice;Grain quality;RVA profile;Grain filling;Marker-trait association

期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）

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收录情况： SCI

摘要： Physical appearance and eating and cooking qualities (ECQ) encompassed in rice quality traits have pivotal roles in the new varieties approved, dictating market value. In this regard, it was increasingly important to evaluate various physiological mechanisms, physicochemical properties and the genetic basis involved in controlling grain quality. The investigation in this study showed a large variation in the phenotypic diversity of grain appearance and ECQ among 48 rice accessions. A significant correlation was observed between RVA-pasting properties and multiple grain-quality properties, and attributes of Setback (SB) and consistency (Cons) service as the primary keys in starch pasting. Grain-filling characteristics were surveyed and the principal differences of the trends of rice grain filling were found. The filling rate and duration exhibited significant influence on grain quality. Significant marker-trait association for grain shape, chalkiness and ECQ were explored integrally, proving optional valuable loci can be used for alleles pyramiding. Three SNP markers, GBSSI-G/T, GBSSI-4-IF and SSIIa-GC/TT, can straightforwardly be used for polygenic pyramiding by carrying alleles of T/T, C/C and TT/TT, satisfying for genotype selection for ECQ properties of low-AC, high-GC, and low-GT.

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