3套水稻近等基因系对两个病圃稻瘟病菌的抗性评价

采用苗期喷雾法，评价了丽江新团黑谷、CO39和IRBL系列等3套近等基因系水稻品种对云南省腾冲县和罗平县两个病圃稻瘟病菌的抗性水平及利用价值。结果表明：C101A51（Pi-2（t））、IRBL-22（Pi-9（t））和IRBL-23（Pi-12（t））等3个品系的抗性最强，抗病频率分别为：94．22％、93．50％、90．61％。对2个抗瘟基因的联合抗病性分析表明，Pi-2＋Pi-9基因、Pi-2＋Pi-12基因搭配的联合抗病性系数达0．88和0．86，在抗病育种中适于聚合应用。...

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Bibliographic Details
Published in江西农业学报 Vol. 26; no. 7; pp. 50 - 54
Main Author 褚晋 何鹏飞 赵正龙 吴毅歆 何朋杰 何月秋
Format Journal Article
LanguageChinese
Published 云南农业大学 植物保护学院,云南 昆明,650201%云南农业大学 农学与生物技术学院,云南 昆明,650201 2014
Subjects
抗谱
水稻稻瘟病
联合抗病性
近等基因系
Rice blast
抗谱
联合抗病性
Resistant spectrum
水稻稻瘟病
Near-isogenic line
Associative resistance
近等基因系
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ISSN1001-8581

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Summary:采用苗期喷雾法，评价了丽江新团黑谷、CO39和IRBL系列等3套近等基因系水稻品种对云南省腾冲县和罗平县两个病圃稻瘟病菌的抗性水平及利用价值。结果表明：C101A51（Pi-2（t））、IRBL-22（Pi-9（t））和IRBL-23（Pi-12（t））等3个品系的抗性最强，抗病频率分别为：94．22％、93．50％、90．61％。对2个抗瘟基因的联合抗病性分析表明，Pi-2＋Pi-9基因、Pi-2＋Pi-12基因搭配的联合抗病性系数达0．88和0．86，在抗病育种中适于聚合应用。
Bibliography:CHU Jin, HE Peng-fei, ZHAO Zheng-long, WU Yi-xin, HE Peng-jie, HE Yue-qiu （1. College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China; 2. College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China）
The resistances of three sets of rice near -isogenic lines （ NILs） with Lijiangxintuanheigu , CO39 and IRBL back-grounds to Magnaporthe oryzae from Tengchong and Luoping rice blast nurseries , and their utilization potential were evaluated by spray inoculation at seedling stage .The results showed that the NILs C101A51 （Pi-2（t））, IRBL-22 （Pi-9（t）） and IRBL-23 （Pi-12（t）） were the most resistant with the resistant frequencies of 94.22%, 93.50%and 90.61%respectively.The analy-sis of associative resistance of two blast -resistant genes indicated that the gene combinations Pi-2＋Pi-9 and Pi-2＋Pi-12 had the associative resistance coefficients of 0.88 and 0.86 respectively, implying that these gene combinations may be used for rice blast resistance breeding .
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ISSN:1001-8581