|Table of Contents|

Analysis of Resistance to Downy Mildew in Table Grape Varieties

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年20
Page:
25-30
Research Field:
Publishing date:

Info

Title:
Analysis of Resistance to Downy Mildew in Table Grape Varieties
Author(s):
CHEN Zhan; WEI Jianguo; ZHAO Yanzhuo; NIU Shuaike; YANG Lili
(Shijiazhuang Pomology Institute，Hebei Academy of Agriculture and Forestry，Shijiazhuang，Hebei 050061)
Keywords:
downy mildew; resistance identification; semi-quantitative RT-PCR; pathogenesis-related proteins(PRs)
PACS:
-
DOI:
10.11937/bfyy.20190441
Abstract:
In order to provide reference for the breeding of downy mildew resistance varieties，the resistance to downy mildew of 48 table grape varieties were tested by leaf disc inoculation indoor.Meanwhile，the expression patterns of resistance-related genes [STBX]PR1，PR5 and NPR1[STBZ] to downy mildew were investigated through semi-quantitative RT-PCR.The results showed that 30 varieties were highly susceptible，7 susceptible，4 resistant，6 highly resistant，‘Venus Seedless’ immune to downy mildew.The difference of [STBX]PR1 and PR5[STBZ] expression were not significantly in susceptible varieties except ‘Wuhecuibao’ and ‘Red Globe’，which were reduced slightly after inoculation.The expression of [STBX]PR1 and PR5[STBZ] were higher in the resistant ones after downy mildew infection.In susceptible varieties and high-resistant varieties，the expression of gene [STBX]NPR1[STBZ] was up-regulated in 50% varieties and down-regulated in the other ones，while the expression was up-regulated in all the resistant varieties.

References:

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Last Update: 2019-10-30