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

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• 作者：Likai Chen ; Xianchen Yan ; Liping Wang ; Weiwei Gao ; Jing Yang ; Siping Chen…
• 关键词：Rice ; Grain quality ; RVA profile ; Grain filling ; Marker ; trait association
• 刊名：Euphytica
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：213
• 期：1
• 全文大小：
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Plant Sciences; Plant Genetics & Genomics; Plant Pathology; Plant Physiology; Biotechnology;
• 出版者：Springer Netherlands
• ISSN：1573-5060
• 卷排序：213

文摘

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.