中国水稻科学

中国水稻科学

• 研究简报 • 上一篇    下一篇

应用系统聚类方法筛选持久抗瘟性水稻品种

肖放华1; 陈; 勇2; 彭绍裘1; 肖应辉3; 梁; 斌2; 刘二明1; 黄费元1   

  1. 1湖南省农业科学院 植物保护研究所， 湖南 长沙 410125；2云南省农业科学院 农作物品种资源站， 云南 昆明 650205；3湖南农业大学 植物科技学院， 湖南 长沙 410128
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2001-07-10 发布日期:2001-07-10

Application of Cluster Analysis on Screening Rice Varieties with Durable Resistant to Rice Blast

XIAO Fang-hua; CHEN Yong; PENG Shao-qiu; XIAO Ying-hui; LIANG Bin; LIU Er-ming; HUANG Fei-yuan   

  • Received:1900-01-01 Revised:1900-01-01 Online:2001-07-10 Published:2001-07-10

PDF

摘要： 以Tetep、Moroberekan、B40为抗、感对照，用8个抗性组分，对47个云南地方稻种资源的抗瘟性进行了系统聚类分析。结果表明，可以较好地将1996~1999年的50、27、16、11个品种分别分成6、6、4、3类。持久抗病对照品种Tetep(感~抗)分布于1、2、4类内，但较集中于第2类内；持久抗性品种Moroberekan(感~中抗)集中于第2类内；云南地方品种大白谷、毫弄早、毫玉浪每年同聚于第1类品种中，经连续几年试验，均表现出比Tetep和Moroberekan较稳定和较强的抗瘟性。第3、5、6类为感病品种，其中第3类感病对照品种B40历年与其他品种间的距离较其他品种相互间聚类距离大，属高度感病。连续4年的试验结果表明，系统聚类分析可作为水稻持久抗瘟性品种筛选的方法。

关键词: 水稻, 持久抗性, 稻瘟病, 系统聚类分析, 品种资源

Abstract: Eight resistant indexes being used as appraisal standards to rice blast,cluster analysis were conducted on 47 Yunnan local rice varieties and Tetep (a rice variety with durable resistance to rice blast) , Moroberekan (a rice variety which is conceived as durable resistance to rice blast) and B40 (a rice variety with high susceptibility to rice blast). The results showed that all rice varieties examined each year from 1996 to 1999 could be divided into six, six, four and three groups respectively. Two resistant control varieties, Tetep and Moroberekan, were divided into the groups moderately resistant to susceptible to rice blast. However, three Yunan local rice varieties, Dabaigu, Haolongzao, and Haoyulang had higher resistance to rice blast than that of the two resistant control varieties. The results from four years also showed that cluster analysis could be an objective and practical method for screening rice varieties which are resistant to rice blast.

Key words: rice, durable resistant, rice blast, cluster analysis, germplasm