摘要
从马唐罹病植株上分离到 6种病原真菌 :中隔弯孢、新月弯孢、多节长蠕孢、灰梨孢、链格孢和粉红镰孢。其中新月弯孢和多节长蠕孢对玉米有致病作用 ,灰梨孢对水稻有轻微的致病作用 ;另3种病原真菌中 ,链格孢和粉红镰孢对马唐致病性弱 ,而中隔弯孢菌株对 4叶期以下的马唐有极强的致病作用 ,室内控制效果可达 1 0 0 % ,田间控制可达 75%以上。对中隔弯孢菌株QZ 2 0 0寄主范围测定表明 :该菌对水稻、玉米、大豆、棉花、小麦、向日葵、花生等作物及黑麦草、高羊茅和狗牙根等草坪草十分安全 。
Six pathogenic fungi were isolated from naturally infected plant of Digitaria sanguinalis. They were identified as Curvularia intermedia, C. lunata, Helminthosporium nodulosum, Piricularia grisea, Altarnaria alternata and Fusarium roseum. Among them, C. lunata and H. nodulosum infected corn and P. grisea infected rice slightly. Under the condition of 48h dew period, A. alternata and F. roseum did not cause death of D. sanguinalis seedlings at the 1-3 leaf stage, but C. intermedia provided good control (90%-100% in greenhouse and 75% in field) of the weed at the 1-3.5 leaf stage. Initial host range test were done with C. intermedia. The pathogen did not infect rice, corn, soybean, cotton, wheat, sunflower, peanut, and lawn. C. intermedia may be a potential agent as bioherbicide to control crabgrass.
出处
《中国生物防治》
CSCD
北大核心
2004年第3期206-210,共5页
Chinese Journal of Biological Control
基金
国家 8 6 3项目 (2 0 0 1AA2 4 6 0 12 )
国家自然科学基金 (30 170 6 19)
高校博士点基金 (2 0 0 0 0 30 70 8)
江苏省自然科学基金 (BK2 0 0 10 6 6 )
关键词
中隔弯孢
真菌除草剂
马唐
致病性
寄主范围
Curvularia intermedia
bioherbicide
Digitaria sanguinalis
pathogenicity
indigenous fungi
host range
