Improvement of Resistance to Rice Stripe Virus in Wuyunjing 8 via Molecular Marker-Assisted Selection

Q3 Agricultural and Biological Sciences Acta Agronomica Sinica Pub Date : 2011-05-01 DOI:10.1016/S1875-2780(11)60021-7

Hong-Gen ZHANG , Zuo-Peng XU , Peng LI , Bo LI , Chao LIU , Bang-Hui ZHU , Jie-Fen XU , Zhong-Yi NIU , Shu-Zhu TANG , Guo-Hua LIANG , Ming-Hong GU

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引用次数: 1

Abstract

A molecular marker-assisted selection (MAS) strategy was used to improve resistance to Rice stripe virus (RSV) in rice (Oryza sativa L. subsp. japonica cv. Wuyunjing 8). Rice variety “Aoikaze” with resistance to RSV was used as the donor. Sequence-tagged site (STS) markers STS11-31, STS11-7, STS11-19, and STS11-43 anchoring the resistance loci were used for MAS in the backcross progenies. In 2008, 70 lines of BC₃F₅ and 115 lines of BC₄F₄ population were obtained with stable agronomic traits after MAS assay. Further evaluation of agronomic traits, yield, grain quality, and resistance to RSV were carried out in these backcross progenies, and 10 BC₄F₅ lines and 2 BC₃F₆ lines showed similar phenotypes to Wuyunjing 8. The 12 lines were finally selected for the improved resistance to RSV and the high-yield and elite-quality of Wuyunjing 8.

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利用分子标记辅助选择提高武运粳8号对水稻条纹病毒的抗性

采用分子标记辅助选择(MAS)策略提高水稻对水稻条纹病毒(RSV)的抗性。粳稻的履历。以抗RSV水稻品种“Aoikaze”为供体。在回交后代中使用序列标记位点(Sequence-tagged site, STS)标记STS11-31、STS11-7、STS11-19和STS11-43固定抗性位点。2008年，通过MAS检测，获得了70个BC3F5群体和115个BC4F4群体的稳定农艺性状。对回交后代的农艺性状、产量、籽粒品质和RSV抗性进行了进一步评价，10个BC4F5系和2个BC3F6系表现出与武运粳8号相似的表型。最终选择12个品系进行抗RSV改良和武运粳8号高产优质改良。

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