VEGETOS: An International Journal of Plant ResearchOnline ISSN: 2229-4473
Print ISSN: 0970-4078

Research Article, Vegetos Vol: 30 Issue: 1

First Report on Physiological Races of Phakopsora pachyrhizi Syd Causing Asian Soybean Rust in India

Sharada H, Shamarao Jahagirdar* and Basavaraja GT
Department of Plant Pathology, AICRP on Soybean, University of Agricultural Sciences, Karnataka, India
Corresponding author : Shamarao Jahagirdar
Department of Plant Pathology, AICRP on Soybean, University of Agricultural Sciences, Dharwad-580 005, Karnataka, India
Tel: 09740641068
E-mail: [email protected]
Received: September 09, 2016 Accepted: January 02, 2017 Published: January 09, 2017
Citation: Sharada H, Shamarao Jahagirdar, Basavaraja GT (2017) First Report on Physiological Races of Phakopsora pachyrhizi Syd Causing Asian Soybean Rust in India. Vegetos 30:1. doi: 10.5958/2229-4473.2017.00005.2

Abstract

First Report on Physiological Races of Phakopsora pachyrhizi Syd Causing Asian Soybean Rust in India

The physiological variability studies were carried out for 17 isolates collected from different growing environment of India. Three pathotypes were identified based on physiological variability on 13 international set of differentials namely Cluster I-Reddish Brown (RB) lesion producing pathotypes, Cluster II- TAN lesion producing pathotypes and Cluster III- Mixed or RB + TAN producing pathotypes. Based on the reaction of Phakopsora pachyrhizi isolates on two differentials PI 230971 and PI 200492, Race 2 produced RB type lesions on PI 230971 and TAN type on the other differentials and Race 3 produced TAN type lesion PI 200492 and RB type lesion on the other differentials were identified. Based on reaction on these two differentials, Race 2 and Race 3 are prevalent in Karnataka state while, only Race 2 was prevalent in Maharashtra and north eastern states...

Keywords: Soybean; Phakopsora pachyrhizi Syd; Pathotypes TAN lesion and RB lesions; Host differentials

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