川渝地区稻曲病菌的生物学特性研究  

Study on Biological Characteristics of Rice False Smut(Ustilaginoidea virens)in Sichuan-Chongqing Region

作　　者：聂雨希 秦玉宝 张瑞璇 方安菲 NIE Yuxi;QIN Yubao;ZHANG Ruixuan;FANG Anfei(School of Plant Protection,Southwest University,Chongqing400715,China)

机构地区：[1]西南大学植物保护学院,重庆400715

出　　处：《植物医生》2021年第6期11-18,共8页Plant Doctor

基　　金：西南大学博士启动基金(SWU118069);国家自然科学基金青年基金(32001975).

摘　　要：本文探讨了川渝7个地区76个稻曲病菌Ustilaginoidea virens菌株的生物学特性,包括从四川南充分离获得的12个菌株、宣汉分离获得的16个菌株、双流分离获得的14个菌株、重庆涪陵分离获得的9个菌株、永川分离获得的12个菌株、璧山分离获得的5个菌株、万盛分离获得的8个菌株.采用生物学方法对菌株的色泽、产孢能力和生长速率进行测定,并对这些菌株的生物学特性进行显著性和相关性分析.结果发现,76个菌株包含白色、黄色、黄绿色和深绿色4种色泽,其中黄色为菌株主要色泽,占52.63%;不同地区稻曲病菌在生长速率和产孢能力上存在显著性差异,不同色泽的菌株在生长速率上存在显著性差异;此外,菌株的产孢能力和生长速率之间呈负相关.研究结果为川渝地区防治稻曲病提供科学依据.In a study reported in this paper,the biological characteristics of 76 Ustilaginoidea virens strains from Sichuan-Chongqing region were investigated.Of these strains,12,16,14,9,12,5 and 8 were isolated from Nanchong,Xuanhan,Shuangliu,Fuling,Yongchuan,Bishan and Wansheng,respectively.The biological method was used to analyze the color,sporulation ability and growth rate of the isolates.Significance and correlation analyses of these biological characteristics were performed.Four kinds of color(white,yellow,yellow green and dark green)were detected in these isolates,of which yellow was the dominant pigment,accounting for 52.63%of the total.Isolates originating from different areas had significant difference in growth rate and sporulation;and isolates of different colors were significantly different in growth rate.In addition,sporulation of the isolates was negatively correlated with their growth rate.

关 键 词：稻曲病菌 色泽 产孢能力 生长速率 相关性分析 

分 类 号：S432.44[农业科学—植物病理学]