|Table of Contents|

Biological Characteristics and Fungicide Sensitivity of Acremonium sclerotigenum of Longya Lilium brownii Soft Rot Pathogen

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2023年15
Page:
115-121
Research Field:
Publishing date:

Info

Title:
Biological Characteristics and Fungicide Sensitivity of Acremonium sclerotigenum of Longya Lilium brownii Soft Rot Pathogen
Author(s):
YU Xin; LIU Jiarong; LI Nan; ZHAO Yafang; LI Rungen
(Yichun University,Jiangxi Key of Crop Growth Regulation,Yichun,Jiangxi 336000)
Keywords:
Lilium brownii var. viridulum; Acremonium sclerotigenum; biological characteristics; drug sensitivity
PACS:
-
DOI:
10.11937/bfyy.20224847
Abstract:
Taking Acremonium sclerotigenum of Longya Lilium brownii soft rot as test material，mycelial growth and sporulation were studied under the effects of different temperatures，pH，light，carbon and nitrogen sources conditions by using the mycelial growth rate method and spore counting method and the sensitivity of the pathogen to 5 fungicides was determined by using the mycelial growth inhibition method，in order to provide reference for the prevention and treatment of Longya Lilium brownii soft rot pathogen in the field.The results showed that the optimum conditions for the mycelial growth of Acremonium sclerotigenum were found to be 25 ℃,pH 7,12 hours light (112 lx fluorescent lamp irradiation)/12 hours darkness，soluble starch for carbon,and ammonium nitrate for nitrogen.Optimal spores producing conditions 30 ℃，pH 6，24 hours dark，fructose for carbon source，beef extract for nitrogen source.Among the tested chemical and biocidal fungicides，430 g·L-1 tebuconazole or 1% phenazinE1carboxylicacid had the greatest inhibition with EC50 value of 0.004 8 mg·L-1and 3.587 2 mg·L-1， respectively.The lethal temperature of mycelia and conidia was 62 ℃ and 63 ℃，respectively.The pathogen had strong pathogenicity to tomato，cucumber and other crops.

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Last Update: 2023-09-19