源自杂交稻组合五优308稻瘟病菌致病性分析

对采自广东韶关、河源、梅州等稻区严重感染稻瘟病的杂交稻组合五优308穗瘟标样进行了稻瘟病菌分离,获得源自不同地点的穗瘟标样分离物18个,利用7个中国稻瘟病菌小种鉴别品种和11个单基因系对分离物进行了致病性分析。结果表明：所分离菌株鉴定出ZB13、ZB15、ZC13等3个小种,分别占分离菌株的66.67%、27.78%、5.56%;对分离菌株表现出高感的抗性基因有Pi-ta2、Pi-sh、Pi-i,对分离菌株具有抗性较好的基因有Pi-kh、Pi-1、Pi2、Pi-9及Pi-50等;所有分离物均能回接上杂交稻五优308,使接种品种表现感病。选取GDHY-308-1401等3个菌株对广东部分品种（组...

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Bibliographic Details
Published in广东农业科学 Vol. 42; no. 14; pp. 70 - 73
Main Author 汪文娟 韦小燕 陈凯玲 陈尉芹 陈珍 杨健源 朱小源
Format Journal Article
LanguageChinese
Published 广东省农科院植物保护研究所/广东省植物保护新技术重点实验室,广东广州,510640 2015
Subjects
五优308
水稻品种（组合）
稻瘟病菌
致病性
致病性
水稻品种(组合)
稻瘟病菌
五优308
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ISSN1004-874X

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Summary:对采自广东韶关、河源、梅州等稻区严重感染稻瘟病的杂交稻组合五优308穗瘟标样进行了稻瘟病菌分离,获得源自不同地点的穗瘟标样分离物18个,利用7个中国稻瘟病菌小种鉴别品种和11个单基因系对分离物进行了致病性分析。结果表明：所分离菌株鉴定出ZB13、ZB15、ZC13等3个小种,分别占分离菌株的66.67%、27.78%、5.56%;对分离菌株表现出高感的抗性基因有Pi-ta2、Pi-sh、Pi-i,对分离菌株具有抗性较好的基因有Pi-kh、Pi-1、Pi2、Pi-9及Pi-50等;所有分离物均能回接上杂交稻五优308,使接种品种表现感病。选取GDHY-308-1401等3个菌株对广东部分品种（组合）进行了致病性测定,在测定的45个品种（组合）中,表现感至高感的品种（组合）有13个,占28.89%;中感的有2个,占4.44%;中抗至高抗的有30个,占66.67%。其中与五优308同一类型的杂交稻组合五丰优9802、五优613、五优1179对接种菌株表现出良好抗性,在五优308感病的稻区可考虑种植上述抗病品种。
Bibliography:44-1267/S
WANG Wen-juan, WEI Xiao-yan, CHEN Kai-ling, CHEN Wei-qin, CHEN Zhen, YANG Jian-yuan, ZHU Xiao-yuan （Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of Hight Technalogy for Plant Protection, Guangzhou 510640, China）
Wuyou308; Magnaporthe grisea; pathogenicity; rice varieties and combinations
Eighteen blast isolates were obtained from a hybrid combination Wuyou308 using the Magnaporthe oryzae pathogen isolation method. Race identification of these isolates was conducted based on 7 Chinese blast differentials and 11 blast monogenic lines. The results indicated that the isolates were identified as the race of ZB13, ZB15, ZC13, accounting for 66.67%, 27.78%, 5.56%, respectively, the resistance genes including Pi-ta2, Pi-sh, Pi-i were highly susceptible to these isolates, while the resistance genes like Pi-kh, Pi-1, Pi2, P/-9 and P/-50 showed good resistant to tested pathogens. All isolates were compatible to the original rice of hybrid Wuyo
ISSN:1004-874X