中文摘要：稻瘟病、白叶枯病（BB）和褐飞虱（BPH）是水稻上三种主要的病虫害。本研究通过聚合抵抗瘟病、BB和BPH的抗性基因来培育恢复系。研究发现，Zhongzu 14供体亲本含有未知的优良BPH抗性基因，并证明了虽然2012年天气有利于病害发生，但含有Pi1和Pi2基因的品系具有有效的抗性。本研究结果表明，在恢复系上聚合多个抗性基因有助于水稻抗性育种。
外文摘要：Rice blast, bacterial blight (BB) and brown planthopper (BPH) are the three main pests of rice. This study investigated pyramiding genes resistant to blast, BB and BPH to develop restorer lines. Ten new lines with blast, BB and/or BPH resistance genes were developed using marker-assisted selection (MAS) technique and agronomic trait selection (ATS) method. Only HR13 with resistance genes to blast, BB and BPH was obtained. In addition to blast and BB resistance, four lines (HR39, HR41, HR42, HR43) demonstrated moderate resistance to BPH, but MAS for BPH resistance genes were not conducted in developing these four lines. These data suggested that there were unknown elite BPH resistance genes in the Zhongzu 14 donor parent. A more effective defense was demonstrated in the lines with Pi1 and Pi2 genes although the weather in 2012 was favorable to disease incidence. Blast resistance of the lines with a single resistance gene, Pita, was easily influenced by the weather. Overall, the information obtained through pyramiding multiple resistance genes on developing the restorer lines is helpful for rice resistance breeding.
外文关键词：rice；blast；bacterial blight；brown planthopper；resistance；pyramid
作者：Ji Zhi-juan; Yang Shu-dong; Zeng Yu-xiang; 等
作者单位：中国水稻研究所
期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE
期刊影响因子：0.724
出版年份：2016
出版刊次：7
点击下载：在水稻恢复系中聚合稻瘟病、白叶枯病和褐飞虱抗性基因的研究