水稻品种(组合)对稻黑孢霉菌的抗性评价  

Resistance evaluation of rice varieties against Nigrospora oryzae(Berk.et Br.)Petch

作　　者：冯爱卿[1] 黄显良 江先芽 陈深[1] 伍尚信 黄日亮 曾列先[1] 朱小源[1] 

机构地区：[1]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 [2]阳江市农业科学研究所,广东阳江529500

出　　处：《广东农业科学》2015年第16期51-54,I0001,共5页Guangdong Agricultural Sciences

基　　金：国家现代农业产业技术体系建设专项(CARS-01-24);广东省现代农业产业技术体系建设专项(粤财教[2009]356号)

摘　　要：在稻黑孢霉菌常发病区广东阳江市白沙，对77个水稻品种（组合）进行了抗稻黑孢霉菌自然诱发鉴定，采用病情指数对品种抗性进行分级评价。结果表明：不同的水稻品种（组合）对该病原的抗感性差异显著。高抗、抗、中抗、中感、感、高感的品种（组合）数分别为0、1、7、17、15、37个。表现为中抗以上的品种如五粤占2号、粤澳占、乡意浓1号、长优736、H两优野占、新两优117等，在田间的病情指数均在20～30；而高感品种在田间的病情指数均在50以上，如鹏稻2号、湛黄占、合莉丝苗、粤标5号、禅增占、圳优21、美优丰占、II优916等，其中鹏稻2号对稻黑孢霉菌表现高度感病，其病情指数达100，产量损失严重。The resistances of 77 rice varieties against Nigrospora oryzae （ Berk.et Br. ） Petch were evaluated in disease nursery in Baisha, Yangjiang, Guangdong. The disease index was used for evaluating the disease resistance of the tested entries. The results showed that there was significant difference of resistance against N. oryzae among different varieties. There were 0, 1, 7, 17, 15 and 37 varieties showed high resistance （ HR ）, resistance （ R ） , moderately resistance （ MR ） , moderately susceptivity （ MS ） , susceptivity （ S ） and high susceptivity （ HS ） respectively. Some of the tested varieties showed more resistance with the disease index from 20 to 30, such as Wuyuezhan NO.2, Yueaozhan, Xiangyinong NO.l, Zhangyou 736, H Liangyouyezhan, Xinliangyou 117. However, some of the tested entries showed more susceptivity with the disease index over 50, such as Pengdao NO.2., Zhanhuangzhan, Helisimiao, Yuebiao NO.5, Chanzengzhan, Zhenyou 21, Meiyoufengzhan, IIyou 916. The varietiy Pengdao NO.2 showed high susceptivity with the disease index of 100, and its whole plant were damaged seriously by N. oryzae.

关 键 词：水稻品种 稻黑孢霉菌 抗性评价 

分 类 号：S511.034[农业科学—作物学]