Journal of Integrative Agriculture ›› 2016, Vol. 15 ›› Issue (7): 1432-1440.DOI: 10.1016/S2095-3119(15)61165-0

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Pyramiding blast, bacterial blight and brown planthopper resistance genes in rice restorer lines

  

  • 收稿日期:2015-05-25 出版日期:2016-07-06 发布日期:2016-07-06

Pyramiding blast, bacterial blight and brown planthopper resistance genes in rice restorer lines

JI Zhi-juan1, 2*, Yang Shu-dong3*, ZENG Yu-xiang2, LIANG Yan2, YANG Chang-deng2, QIAN Qian1, 2   

  1. 1 College of Agronomy, Shenyang Agricultural University, Shenyang 110866, P.R.China 
    2 State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, P.R.China
    3 Shengzhou Seed Production Farm, Shaoxing 312000, P.R.China
  • Received:2015-05-25 Online:2016-07-06 Published:2016-07-06
  • Contact: YANG Chang-deng, Tel/Fax: +86-571-63370367, E-mail: yangchangdeng@126.com; QIAN Qian, Tel/Fax: +86-571-63371418, E-mail: qianqian188@hotmail.com
  • Supported by:

    This work was financially supported by the National Natural Science Foundation of China (31221004), the Science and Technology Innovation Project of Chinese Academy of Agricultural Sciences, the Science and Technology Program of Zhejiang Province, China (2015C32056) and the Research Project on Public Welfare from the Ministry of Agriculture of China (2012RG001-5).

Abstract:      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.

Key words: rice ,  blast ,  bacterial blight ,  brown planthopper ,  resistance ,  pyramid