Evaluation of resistance of different nectarine cultivars to causal agent of peach powdery mildew Podosphaera pannosa
Subject Areas : Plant Protectionکربلایی خیاوی karbalaei 1 , Seyed Yaghob Seyed Masoumi 2 , Adel Pirayesh 3 , Hossein Khabbaz Jolfaei 4
1 - Assistant Professor, Plant Protection Research Department, Ardabil Agricultural and Natural Resources Research and Education Centre, AREEO, Ardabil, Iran
2 - Plant Protection Research Department, Ardabil Agricultural and Natural Resources Research and Education Centre, AREEO, Ardabil, Iran
3 - Plant Protection Research Department, Ardabil Agricultural and Natural Resources Research and Education Centre, AREEO, Ardabil, Iran
4 - Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
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Abstract :
Peach powdery mildew (Podosphaera pannosa) is one of the most economically destructive diseases of peach all over the world including Iran. In order to evaluate 11 genotypes of nectarines reaction against powdery mildew, an experiment was conducted in randomized complete block design with three replications during 2017-2018 in Agriculture and Natural Resources Research Station in Meshginshahr. The research was conducted in two conditions of natural infection and artificial inoculation. Cultivars included Independence, Stargold, Sangold, Sangold, Sanking, Giuta, Shabrang Karaj, Ghermeze Paeeze Karaj, Vega, Orion, Jiova and Veinberger. Evaluation of different cultivars of nectarine reaction to powdery mildew was conducted follow 0: Immune, 1: Very resistant 2: Resistant 3: Medium resistant 4: Sensitive and 5: Very sensitive. The results of two-year evaluation showed that there were significant differences between the degrees of resistance among the treatments. Comparison of means showed that the cultivar Veinberger in resistant and Stargold, Sangold, Sangold, Sanking, Giuta, Shabrang Karaj, Ghermeze Paeeze Karaj, Vega, Orion, and Jiova were in medium resistant cultivars. The results of the current study could be used in management of peach powdery mildew.
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