Evaluation of Curvularia lunata Strain B6 as a Potential Mycoherbicide to Control Barnydrgrass (Echinochloa crus-galli)

被引:5
|
作者
Li Jing [1 ]
Wei Tao [1 ]
Sun Ai-rui [1 ]
Ni Han-wen [1 ]
机构
[1] China Agr Univ, Coll Agron & Biotechnol, Beijing 100193, Peoples R China
关键词
barnyardgrass; Curvularia lunata; biological control; mycoherbicide; rice; BIOLOGICAL-CONTROL;
D O I
10.1016/S2095-3119(13)60441-4
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
The virulent strain B6 of Curvularia lunata was screened out from 65 fungus strains isolated from the diseased leaves of barnyardgrass (Echinochloa crus-galli). Greenhouse and field studies were conducted to evaluate the feasibility of the strain being exploited as a mycoherbicide for barnyardgrass control in paddy fields. The results of pathogenicity experiments showed that this strain was highly pathogenic to barnyardgrass at the 1- to 2.5-leaf stages. The fresh weight reduction increased with the increase of inoculated conidial concentrations and the prolongation of dew duration. Strain B6 provided excellent barnyardgrass control when it was applied at the concentration of 1 x10(4)-1 x10(6) conidia mL(-1) in paddy fields with water layer. This strain was very safe to rice and the most plant species except wheat, barley and corn. Findings of this study indicated that this strain could be a potential mycoherbicide for barnyardgrass control in paddy fields in the future.
引用
收藏
页码:1201 / 1207
页数:7
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