利用小麦内生细菌防治小麦全蚀病的初步研究

被引：22

作者：

张颖 ^{[1
]}

王刚 ^{[1
]}

郭建伟 ^{[1
]}

王美南 ^{[2
]}

杨之为 ^{[2
]}

机构：

[1] 河南大学生物工程研究所

[2] 西北农林科技大学植物保护学院

来源：

植物病理学报 | 2007年 / 01期

关键词：

endophytic bacteria; antagonism; Gaeumannomyces graminis var.tritici; biocontrol;

D O I：

10.13926/j.cnki.apps.2007.01.018

中图分类号：

S435.121 [病害];

学科分类号：

090401 ; 090402 ;

摘要：

Fifty six endophytic bacteria strains were isolated from the roots of wheat,and one strain named G-32 was screened with antagonism on pathogenic fungi of Gaeumannomyces graminis var.tritici.Preliminary characterization indicated that G-32 was belonged to Bacillus cereus.The inhibitory action to the fungi was assayed in lab by using the fermentable extracts of antagonistic endophytic bacteria.The results showed that mycelium of G.graminis var.tritici growed slowly and the biomass reduced 89% compared with the control 6 d after inoculation.The hyphae were deformative which broke into pieces.Colonization was studied with dual-resistant label which suggested that the endophytic bacteria strain could colonize in the root systems of wheat.The control efficacy with G-32 strain against the disease of the wheat take-all in pot tests was better than that of common used chemical fungicide Diniconazole.

引用

页码：105 / 108

页数：4