文献类型： 外文期刊
作者： Zhang, Shuijin 1 ; Lu, Xiaozhuan 1 ; Chen, Chunhua 2 ; Zhou, Peng 1 ; Tian, Dagang 1 ; Chen, Jianmin 1 ;
作者机构： 1.Fujian Acad Agr Sci, Digital Agr Res Inst, Biotechnol Res Inst, Rice Res Inst, Fuzhou 350003, Fujian, Peoples R China
2.Nanping Agr Technol Extens Stn, Nanping 354200, Fujian, Peoples R China
关键词：
Rice;
期刊名称：EUPHYTICA （ 影响因子：1.7； 五年影响因子：1.8 ）
ISSN： 0014-2336
年卷期： 2025 年 221 卷 7 期
页码：
收录情况： SCI
摘要： Red rice is characterized by high levels of anthocyanins, which have been recognized for their health benefits. In our previous research, we developed several homozygous lines with red pericarp, providing foundational materials for the enhancement of red rice through molecular-assisted breeding (MAS). In the current study, we utilized a single-nucleotide polymorphism within the Rc gene to develop a co-dominant derived cleaved amplified polymorphic sequence (dCAPS) marker, designated as Rc_dCAPS1. Utilizing Rc_dCAPS1, we successfully introgressed the Rc allele from the most representative donor lines, ZNS-#22 and X134-#2, into the male sterile line T710S and restorer line Xiang32. Rice seeds from five Rc-containing lines and their combinations were measured for anthocyanidins, and high accumulation levels of delphinidin and cyanidin were observed in these lines. Moreover, the five improved representative lines T71S-#1, T71S-#2, Xiang32-#1, Xiang32-#2, Xiang32-#3, and their combinations displayed some superior agronomic traits, such as increased plant height and panicle length, compared to their parents, respectively, suggesting that back-crossing selection positively influenced key agronomic traits. Furthermore, we found that these 5 improved lines showed markedly enhanced susceptibility to blast fungi compared with their respective wild parents. These results indicate that the optimized marker Rc_dCAPS1 is effective in introducing Rc through MAS. It is conceivable that our method could be applied to most white pericarp rice varieties and would greatly accelerate the breeding of new red rice varieties with restored recessive frame-shift alleles for crop improvement.
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