中国稻米 ›› 2021, Vol. 27 ›› Issue (1): 9-13.DOI: 10.3969/j.issn.1006-8082.2021.01.003

• 专论与研究 • 上一篇    下一篇

多年生稻稻瘟病抗性评价

何奕霏1(), 秦世雯1, 张石来1, 黄光福1, 张静1, 杨勤忠2, 胡凤益1,*()   

  1. 1云南大学农学院/云南省多年生稻工程技术研究中心,昆明 650504
    2云南省农业科学院农业环境资源研究所,昆明650205
  • 收稿日期:2020-11-23 出版日期:2021-01-20 发布日期:2021-01-20
  • 通讯作者: 胡凤益
  • 作者简介:

    第一作者:heyifei@mail.ynu.edu.cn

  • 基金资助:
    云南省重大科技专项“多年生稻种质创新及应用研究”(2019ZG013)

Evaluation of Rice Blast Resistance in Perennial Rice

Yifei HE1(), Shiwen QIN1, Shilai ZHANG1, Guangfu HUANG1, Jing ZHANG1, Qinzhong YANG2, Fengyi HU1,*()   

  1. 1Research Center for Perennial Rice Engineering and Technology of Yunnan/School of Agriculture, Yunnan University, Kunming 650504, China
    2Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205,China
  • Received:2020-11-23 Online:2021-01-20 Published:2021-01-20
  • Contact: Fengyi HU
  • About author:

    1st author: heyifei@mail.ynu.edu.cn

摘要:

利用长雄野生稻(Oryza longistaminata)地下茎无性繁殖特性培育多年生稻(Perennial Rice, PR)已经成功并开始示范推广。多年生稻表现出一定的稻瘟病抗性,但其所具有的稻瘟病抗性来源尚不清楚。本研究通过田间病情调查、接种鉴定以及抗性基因检测等3种方法,对育成的多年生稻23(PR23)、云大24(PR24)、云大25(PR25)、云大101(PR101)、云大107(PR107)、父本长雄野生稻、母本RD23、(RD23/长雄野生稻)F1进行稻瘟病抗性评价。结果表明,父本长雄野生稻、(RD23/长雄野生稻)F1代及5个多年生稻品种(系)表现为高抗稻瘟病,而母本RD23表现高感稻瘟病,推测PR23、PR24、PR25、PR101和PR107这5个多年生稻品种(系)的稻瘟病抗性可能来源于长雄野生稻。其中,PR23、PR25稻瘟病抗性基因可能来自于长雄野生稻的Pi5基因和Pita-2位点,PR24稻瘟病抗性基因可能是来自长雄野生稻的Pita-2位点,PR107稻瘟病抗性基因可能来自于长雄野生稻的Pi5基因和Pish位点;PR101中未检测到本文中涉及到的基因或位点,推测其稻瘟病抗性来自长雄野生稻内未知的稻瘟病抗性基因。本研究结果将为多年生稻稻瘟病抗病育种、品种布局、植保技术制定等提供一定参考。

关键词: 多年生稻, 稻瘟病, 抗性评价, 长雄野生稻

Abstract:

Perennial rice has been developed successful by utilizing the rhizome trait of the wild rice species, Oryza longistaminata and demonstrated widely, exhibiting broad-spectrum resistance to rice blast. To understand the reason of resistance to blast of perennial rice, disease investigation in famer's field, inoculation identification and molecular detection of rice blast resistant genes were carried out among nine accessions including five perennial rice varieties (lines) as Perennial Rice 23(PR23), Yunda24 (PR24), Yunda25 (PR25), Yunda101 (PR101), Yunda107 (PR107), male parent O. longistaminata, female parent RD23, F1(RD23/O. longistaminata) and Lijiangxintuanheigu(LTH). The results showed that all the five perennial rice varieties(lines), their male parent O. longistaminata and the original F1(RD23/O. longistaminata) had high resistance to rice blast, while their female parent RD23 showed high susceptibility, which indicated that the rice blast resistance gene of these five perennial rice lines may originated from O. longistaminata. The resistance of PR23 and PR25 might owing to the Pi5 gene and Pita-2 locus from O. longistaminata, and the resistance of PR24 might due to the pita-2 locus from O. longistaminata, while that of PR107 might inherited from O. longistaminata with the Pi5 gene and Pish locus. However, none of the known rice blast resistance genes or loci mentioned in this study were harbored by PR101, speculated that the unknown genes from O. longistaminata inherited by PR101 archived its blast resistance. The results of this study provided a basis and strategy for blast disease resistance breeding, perennial rice varieties distribution and plant protection technology decision in future.

Key words: perennial rice, rice blast, resistance evaluation, Oryza longistaminata

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