|Table of Contents|

Pathogen Identification and Germplasm Screening of Melon Downy Mildew Disease

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2026年5
Page:
126-132
Research Field:
Publishing date:

Info

Title:
Pathogen Identification and Germplasm Screening of Melon Downy Mildew Disease
Author(s):
ZHANG Huimin; FENG Lulu; WANG Manman; YAN Honglang; WEI Xiaoyun; WANG Kang
(Jiangsu Yanjiang Regional Institute of Agricultural Sciences，Nantong，Jiangsu 226012)
Keywords:
melon; downy mildew; pathogen identification
PACS:
S652
DOI:
10.11937/bfyy.20253062
Abstract:
Taking the downy mildew pathogen of melon collected from four places，namely Xuzhou (XZ)，Huai′an (HA)，Suzhou (SZ) and Nantong (NT)，as the test materials，by using methods such as field disease identification，microscopic morphology observation of the pathogen and ITS sequence analysis，a phylogenetic tree was constructed to study the classification of the pathogen，and to clarify the types of downy mildew pathogen of melon in Jiangsu Province，in order to provide reference for breeding downy mildew-resistant melon germplasm and investigating disease resistance mechanisms.The results showed that the sequence similarity of the downy mildew pathogen of melon in the four regions was as high as 99%，and all belonged to Pseudoperonospora cubensis.In addition，the research group used 204 melon germplasms collected as test materials to conduct disease resistance identification of downy mildew at the seedling stage and the mature plant stage.The results showed that among the 204 melon germplasms，3 varieties were screened out as highly resistant to downy mildew (554，20144 and 1234)，40 varieties were moderately resistant to downy mildew，and 113 varieties were resistant to downy mildew.

References:

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Last Update: 2026-03-17