|Table of Contents|

Identification of Alternaria tenuissima Pathogen of Raspberry Leaf Blotch and Its Biological Characteristics

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年16
Page:
24-32
Research Field:
Publishing date:

Info

Title:
Identification of Alternaria tenuissima Pathogen of Raspberry Leaf Blotch and Its Biological Characteristics
Author(s):
SHANG Xiaojing; LUO Nixing; ZHANG Fumei; HOU Rui
(College of Forestry,Guizhou University,Guiyang,Guizhou 550025)
Keywords:
raspberry; leaf blotch; Alternaria tenuissima; identification of pathogens; biological characteristics
PACS:
-
DOI:
10.11937/bfyy.20210163
Abstract:
The pathogen S1 was isolated from the damaged raspberry leaves in the raspberry garden of Guiyang,Guizhou Province.After pathogenicity determination,morphology and molecular biology rDNA-ITS sequence similarity analysis,the pathogen S1 was identified as Alternaria tenuissima.The biological characteristics of leafy plaque pathogens were studied by using a single variable method of control,in order to provide a reference for the prevention and treatment of raspberry diseases caused by pathogenic bacteria.The results showed that the ideal temperature conditions for the pathogen S1 mycelial growth and sporulation were in the range of 25 ℃ and 15 ℃.The pathogen S1 was able to grow in a pH 11 and the optimal pH for sporulation and spore germination was 7.0.Strains grew fastest in continuous darkness,and the spore production was the highest in half light.The best carbon sources of starch and lactose was propitious to sporulation.The best nitrogen sources were beef extract for mycelial growth,and that for spore germination and sporulation was leavening agents.The highest spore production was raspberry leaf culture medium and PDA medium was the optimum media for spore production.

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Last Update: 2021-11-28