苏打盐碱地水稻秆腐菌核病病原鉴定及其生物学特性  

Pathogen identification and pathogenic biology of sclerotiniose blight of rice stem rot in sodium bicarbonate soils

作　　者：张佳环[1] 刘巍[1] 潘姣[1] 邵玺文[2] 王志春[3] 敖振超 柳建[1] 刘畅[1] 马周杰 

机构地区：[1]吉林农业大学农学院,长春130118 [2]吉林农业大学农业现代化综合技术研究所,长春130118 [3]中国科学院东北地理与农业生态研究所,长春130012

出　　处：《植物保护》2015年第6期72-78,共7页Plant Protection

基　　金："十一五"国家科技支撑计划重点项目(2009BADB3B03);吉林省重大科技攻关专项(20130204036NY)

摘　　要：对苏打盐碱地水稻秆腐菌核病病原进行了分离、鉴定和生物学特性的研究。结果表明,该病原菌菌核黑色圆球状,表面凸凹形态,直径164～309μm,内部褐色拟薄壁组织；分生孢子淡褐色,1～3个隔膜,大小为（32～76）μm×（5～22）μm；无性世代为 Nakataea sigmoidea ,有性世代为 Magnaporthe salvinii 。病原菌在25＜～30℃时生长较好,利用鼠李糖（P ＜0.05）、硝酸钙（P ＜0.05）和硫酸锌（P ＜0.01）能力最强,在利用碳氮源和微量元素方面,与弱酸性和寒冷地水稻秆腐菌核病病原存在差异。The biological characteristics of the pathogen causing sclerotiniose blight of rice stem rot was isolated,i-dentified,and studied.The results showed that the pathogenic fungus sclerotia was black,knaggy,globular out-side,1 64-309 μm in diameter,and brown inside,and the pathogenic conidia were light brown,1 -3 septates, and （32-76）μm×（5-22）μm in size.The pathogenic asexual generation was Nakataea sigmoidea ,and the sexual generation was Magnaporthe salvinii .The optimum temperature was from 25 ℃ to 30 ℃ for growth of the patho-gen.Rhamnose （P 〈0.05 ）,calcium nitrate （P 〈 0.05 ）,and zinc sulfate （P 〈 0.01 ）had significant promoting effect on the growth of the mycelia.The pathogen showed difference in the utilization of carbon source,nitrogen source,and microelements from the pathogens from non-sodium bicarbonate soils.

关 键 词：苏打盐碱地 水稻秆腐菌核病 病原 菌核 特性 

分 类 号：S435.111[农业科学—农业昆虫与害虫防治]