广东省农业科学院水稻研究所/广东省水稻育种新技术重点实验室
广州市科技计划(201804010467);广东省自然科学基金(2018A0303130172 ,2017A030313183);广东省现代农业产业技术体系水稻创新团队项目(2019KJ105);广东省重点领域研发计划项目(2018B020202004 ,2018B020206002);科技创新战略专项资金(高水平农科院建设)
Rice Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory of New Technology in Rice Breeding
Guangzhou Science and Technology Plan (201804010467); Natural Science Foundation of Guangdong Province (2018A0303130172,2017A030313183); Rice Innovation Team Project of Modern Agricultural Industrial Technology SWystem in Guangdong Province (2019KJ105); Research and Development Program in Key Areas of Guangdong Province (2018B020202004,2018B020206002); Special Fund for Science and Technology Innovation Strategy (Construction of High-level Agricultural Academy)
‘粤农丝苗’是广东省近年来选育的常规优质稻主栽品种,对稻瘟病具有很强的抗性,可作为恢复系亲本应用于杂交稻育种。本研究利用来源于华南稻区的稻瘟病菌株对‘粤农丝苗’的抗谱进行测定。结果显示‘粤农丝苗’具有广谱抗性。为深入了解该品种的抗性基因组成和抗性遗传规律,对‘粤农丝苗’ב丽江新团黑谷’的F2 遗传分离群体进行抗病遗传分析,结果表明‘粤农丝苗’的稻瘟病抗性可能受多基因控制。本研究以Pi1、Pi2、Pi9、Pib、Pita 等主效抗病基因分子标记进行检测,结果表明‘粤农丝苗’至少包含Pi2 和Pib 两个抗性位点。本研究结果初步揭示了‘粤农丝苗’高抗稻瘟病的遗传基础,为抗病品种的推广应用提供重要分子依据。
Rice ‘Yuenong Simiao’ recently bred in Guangdong Province, China, with a strong resistance to rice blast, is a leading high-quality cultivar for regular cultivation, which can also be used as a hybrid rice restorer line. In this study, it has been revealed that ‘Yuenong Simiao’ has a broad spectrum of resistance against rice blast strains from South China. Genetic analysis of genetically segregated F2 population of ‘Yuenong Simiao’ × ‘LTH’ showed that the broad resistance spectrum of ‘Yuenong Simiao’ may be controlled by multiple genes. Using the molecular markers of major resistance genes Pi1, Pi2, Pi9, Pib and Pita, we have detected that ‘Yuenong Simiao’ contains at least Pi2 and Pib resistance loci. These results have revealed the cultivar’s genetic basis of high resistance to rice blast, and provides important molecular basis for extending the cultivation of disease-resistant cultivars.
陆展华,刘维,卢东柏,等.优质稻品种粤农丝苗稻瘟病广谱抗性遗传及基因组成分析[J].植物遗传资源学报,2020,21(4):827-833.
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