|Table of Contents|

Identification and Biological Characteristics of the Pathogen Indentification Pepper Root Rot and Its Biological Research

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2026年2
Page:
94-102
Research Field:
Publishing date:

Info

Title:
Identification and Biological Characteristics of the Pathogen Indentification Pepper Root Rot and Its Biological Research
Author(s):
HU Jiangtao1ZHANG Jingyan1ZHOU Ying2HAN Zhen3XIONG Chunhui1LUO Zhenying1
(1.Jiangxi Facility Vegetable Technology Innovation Center,Ganzhou Vegetable and Flower Research Institute,Ganzhou,Jiangxi 341413;2.Gannan Academy of Sciences,Ganzhou,Jiangxi 340000;3.Xingguo Chixinghong Agricultural Development Co.Ltd.,Xingguo,Jiangxi 342413)
Keywords:
Bacillus velezensispepperroot rotpathogen identificationbiological characteristicsprevention and control assessment
PACS:
S641.3;S435.6
DOI:
10.11937/bfyy.20252086
Abstract:
Taking samples of pepper root rot disease in Chongyi county as the test materials,the effects of Bacillus velezensis HJT6 on the pathogen GF12 of pepper root rot disease were studied using methods such as tissue isolation,morphological and molecular biology identification,mycelial inhibition,plate antagonism,and greenhouse pot cultivation efficacy determination,in order to provide reference for the biological control of pepper root rot disease.The results showed that based on morphological characteristics and phylogenetic analysis of ITS,tef-1α and Cbh-c multi gene systems,it was determined that the pathogen GF12 causing pepper root rot in the Gannan area was F.oxysporum.When the temperature,pH,carbon source,and nitrogen source were 25 ℃,8,soluble starch and potassium nitrate,the mycelial growth rate were the fastest,at 6.25 mm·d-1,6.22 mm·d-1,6.62 mm·d-1 and 6.22 mm·d-1,respectively.B.velezensis HJT6 on F.oxysporum GF12 had a significant inhibitory effect,with a plate antagonistic inhibition rate of 58.44% and a co-culture inhibition rate of 36.31% on hyphal growth.It could stimulate 12.5 times increase in conidia,and the greenhouse potted pest control effect was 48.35%.In conclusion,B.velezensis HJT6 a good indoor inhibitory effect on F.oxysporum GF12 and could be used as a bacterial resource for antagonizing pepper root rot.

References:

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Last Update: 2026-02-03