Evaluation of Resistance in Bread Wheat to Against in Iranian Pathotypes of Powdery Mildew Caused by Blumeria graminis f.sp.
[1]
Mohammadreza Mansuriyan, Department of Plant Breeding, Faculty of Agriculture and Natural Resources, Islamic Azad University, Science and Research Branch, Tehran, Iran.
[2]
Mehdi Zahravi, Department of National Plant Gene Bank Seed and Plant Improvement Institute, Karaj, Iran.
[3]
Hossein Azimi-Mottem, Plant Pathology Department, Iranian Research Institute of Plant Protection, Karaj, Iran.
[4]
Reza Azizinezhad, Department of Plant Breeding, Faculty of Agriculture and Natural Resources, Islamic Azad University, Science and Research Branch, Tehran, Iran.
[5]
Fereydoon Bondarian, Department of Plant Breeding, Faculty of Agriculture and Natural Resources, Islamic Azad University, Science and Research Branch, Tehran, Iran.
The resistance of 198 bread wheat genotypes from wheat collection of National Plant Gene Bank of Iran was assessed to powdery mildew. The genotypes were planted in the greenhouse in a randomized complete block design with three replications and separately inoculated by ten pathotypes of powdery mildew. The genotypes were inoculated at seedling stage with the infected leaves. After seven to ten days, each infected genotype was recorded on a scale of 0 to 4. Descriptive statistics that were calculated for the reaction of genotypes showed the lowest average of infection type in genotype 172. The principal component analysis were used to distinguish genotypes. The amounts of variation in main two principal components were justified 81.8%. According to the biplot diagram of the main two components resistant genotypes 142 and 172 were distinct from other genotypes with the attention in Dendrogram of cluster analysis we were located the genotypes in two resistant and susceptible groups. The results showed that the potential of resistance in powdery mildew of bread wheat collection in National Plant Gene Bank of Iran which can be used in breeding programs.
Bread Wheat, Powdery Mildew, Pathotype, Genetic Resource
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