摘要
水稻粒宽是衡量粒型、影响产量和品质的重要性状。本研究基于功能标记的开发,设计了水稻粒宽主效基因GW5和GW8的多重PCR检测体系,利用该体系对58份水稻新品系和品种进行鉴定。结果表明,GW5和GW8的多重PCR体系稳定、高效、重复性好。多重PCR检测发现粳稻品种津粳优2186和象牙香占等7个籼稻品种为GW5和GW8双插入型,平均粒宽2.32 mm;乐播1号和盐稻15198为GW8插入型,平均粒宽3.16 mm;其余48个品种为两基因缺失型,平均粒宽3.27 mm。研究结果为水稻粒型改良提供材料资源和分子标记检测技术手段。
Rice grain width is an important trait to measure grain size and closely related to yield and quality. In this study, a multiple PCR detection system for the main effect gene GW5 and GW8 of rice grain width was designed based on the development of functional markers. The system was used to identify 58 new lines and varieties of rice. The results showed that the multiple PCR system of GW5 and GW8 was stable, efficient and reproducible.The multiplex PCR detection found that japonica rice Jinjingyou2186 and 7 indica rice varieties such as Xiangyaxianzhan were GW5 and GW8 double inserted, and the average grain width was 2.32 mm. The Lebo No.1 and the Yandao15198 were the inserted type of GW8 with an average grain width of 3.16 mm. The other 48 varieties were two gene deletion types with an average grain width of 3.27 mm. The results could provide material resources and molecular marker assisted detection techniques for rice grain shape improvement.
引文
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