核农学报2012，Vol.26Issue(5)：734-739,6.
空间诱变泰航68突变体稻瘟病抗性研究
PRELIMINARY REPORT ON THE RICE BLAST RESISTANCE OF SPACE-INDUCED MUTANTS DERIVED FROM RICE CULTIVAR "TAIHANG-68"
摘要
Abstract
To screen the blast resistance mutants,the resistance of SP1 progenies derived from rice variety Taihang-68 were evaluated after satellite flight by representative blast isolate GD0193 which had a broad pathogenic spectra,and then primary genetic analysis of resistant mutants and mapping of resistance gene,as well as resistance spectra at seedling and neck blast resistance at maturity were performed.The results showed that space-mutation was effective method to change the blast resistance of Taihang-68.The screened resistant mutants TH1and TH2 showed the resistance to isolate GD0193 no disjunction and separation respectively,and the resistance separation ratio of TH2 indicated that its resistance was controlled by one pair of major genes,which was preliminary mapped on the long arm of chromosome 11.In blast resistance spectra and neck blast resistance,TH1 and TH2 were both enhanced remarkably compared with the wild-type at seedling and maturity,and their resistance could be inherited,the blast resistance of these two mutants were also increased comparing with several main cultivars in South China.关键词
空间诱变/泰航68/稻瘟病/抗性突变/抗性遗传分析Key words
space-mutation/Taihang-68/rice blast/resistance variation/resistance genetic analysis分类
农业科技引用本文复制引用
张景欣,孙大元,杨祁云,王慧,刘永柱,郭涛,朱小源,陈志强..空间诱变泰航68突变体稻瘟病抗性研究[J].核农学报,2012,26(5):734-739,6.基金项目
国家863高新技术发展计划项目 （）
“十一五”国家科技支撑计划重点项目 （）
广东省自然科学基金项目 （）
国家和广东省现代农业产业技术体系建设专项资金 （）
