Evaluation of relatve resistance of cotton cultivars to Alternaria alternata

Document Type : Research Paper

Authors

1 MSc. Student, Department of Plant Protection, Agriculture Faculty, Birjand University

2 Assisstant Professor, Department of Plant Protection, Agriculture Faculty, Birjand University

3 Assistant Prof., Plant Protection Dept., Cotton Research Institute of Iran

Abstract

Cotton leaf spot disease caused by Alternaria alternata is one of the most common and important diseases in the cotton growth areas. The use of tolerant cultivars is one of the most economic means for the disease control. This study was conducted to evaluate the response of cotton cultivars against the fungus.In this research the fungus were isolated in seedling stage and purified in seedling stage from the cotton fields of Golestan province. and then fungus was detected using morphological data. Confirmed Alternaria species was performed using nucleotide sequence data of ITS – rDNA region and sequencing of the part of endo poly galacturonase gene. Accordingly, isolated Kb2 isolate with fungus 

Keywords


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