3个空间诱变水稻品系的稻瘟病抗性评价及抗性遗传分析

综合考察水稻苗期叶瘟抗谱和成株期穗颈瘟抗性可以全面地评价水稻种质的稻瘟病抗性．本研究采用来自广东不同稻作区的36个稻瘟病菌株，对经过抗性初筛的3个空间诱变水稻品系进行苗期叶瘟抗谱测定；同时种植于代表性自然诱发病圃——广东省从化市吕田镇，考察其穗颈瘟抗性．结果显示，入选的3个诱变品系具有广谱的苗期叶瘟抗谱、且高抗穗颈瘟，抗性明显优于非诱变原种．遗传分析结果表明，H4和H11对菌株GD0193和GD866的抗性均由主效单基因控制，H4对菌株GD08T4、H11对菌株GD08T13的抗性均由2个独立遗传的显性基因控制，D69对菌株GD0193的抗性遗传模式复杂，D69对菌株GD08T4和GD866的...

Full description

Saved in:
Bibliographic Details
Published in华南农业大学学报 Vol. 33; no. 3; pp. 273 - 276
Main Author 肖武名 孙大元 张景欣 王慧 郭涛 刘永柱 朱小源 杨祁云 陈志强
Format Journal Article
LanguageChinese
Published 华南农业大学,国家植物航天育种工程研究中心,广东广州510642%华南农业大学,国家植物航天育种工程研究中心,广东广州510642%广东省农业科学院植物保护研究所,广东广州,510640 2012
广东省农业科学院植物保护研究所,广东广州510640
Subjects
抗性评价
水稻
稻瘟病
空间诱变
遗传分析
稻瘟病
抗性评价
空间诱变
水稻
遗传分析
Online AccessGet full text
ISSN1001-411X
DOI10.3969/j.issn.1001-411X.2012.03.001

Cover

More Information
Summary:综合考察水稻苗期叶瘟抗谱和成株期穗颈瘟抗性可以全面地评价水稻种质的稻瘟病抗性．本研究采用来自广东不同稻作区的36个稻瘟病菌株，对经过抗性初筛的3个空间诱变水稻品系进行苗期叶瘟抗谱测定；同时种植于代表性自然诱发病圃——广东省从化市吕田镇，考察其穗颈瘟抗性．结果显示，入选的3个诱变品系具有广谱的苗期叶瘟抗谱、且高抗穗颈瘟，抗性明显优于非诱变原种．遗传分析结果表明，H4和H11对菌株GD0193和GD866的抗性均由主效单基因控制，H4对菌株GD08T4、H11对菌株GD08T13的抗性均由2个独立遗传的显性基因控制，D69对菌株GD0193的抗性遗传模式复杂，D69对菌株GD08T4和GD866的抗性为主效单基因模式．
Bibliography:rice ; space-induced mutation ; rice blast ; resistance evaluation ; genetic analysis
The rice blast resistance （R） could be evaluated entirely by investigating the resistance spectrum at seedling stage and neck blast resistance at adult stage. In this study, three space-induced rice mutant lines, which had been screened primarily, were performed with resistance spectra with 36 blast isolates from Guangdong Province and neck blast resistance in a natural blast nursery, Ltitian, Conghua. The results indicated that the mutant lines conferred broad resistance spectra and high level of resistance to neck blast, while the on-ground control was highly susceptible. Genetic analysis showed that a single major dominant R gene conditioned H4＇s and H11＇s resistance to isolates GDOI93 and GD866, and there were two independent dominant R genes in H4 and Hl l corresponding to isoahes GD08T4 and GD08T13, respectively. The inherited pattern of resistance in D69 to isolates GD0193 was complicated, while a single dominant major
ISSN:1001-411X
DOI:10.3969/j.issn.1001-411X.2012.03.001