alexa Identification and Validation of a Microsatellite Marker for the Seedling Resistance Gene Lr24 in Bread Wheat
ISSN: 2157-7471

Journal of Plant Pathology & Microbiology
Open Access

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Research Article

Identification and Validation of a Microsatellite Marker for the Seedling Resistance Gene Lr24 in Bread Wheat

Pallavi JK1, Anupam Singh2, Usha Rao I1 and Prabhu KV2*

1Department of Botany, University of Delhi-110007, New Delhi, India

2National Phytotron Facility, Indian Agricultural Research Institute, New Delhi-110012, India

*Corresponding Author:
Pallavi JK
National Phytotron Facility
Indian Agricultural Research Institute
New Delhi-110012, India
Tel: 0091-9899023566
E-mail: [email protected]

Received date: February 28, 2015; Accepted date: June 24, 2015; Published date: June 28, 2015

Citation: Pallavi JK, Singh A, Usha Rao I, Prabhu KV (2015) Identification and Validation of a Microsatellite Marker for the Seedling Resistance Gene Lr24 in Bread Wheat. J Plant Pathol Microb 6:276. doi:10.4172/2157-7471.1000276

Copyright: © 2015 Pallavi JK, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



The background of PBW343, the high yielding and widely cultivated bread wheat cultivar of the Indian subcontinent was utilized. We were able to identify specific microsatellite markers for Agropyron elongatum derived seedling resistance gene Lr24. The two markers, Xgwm114 and Xbarc71 were mapped at a distance of 2.4 cM from Lr24 locus. They can be unquestionably utilized as landmarks for identification of these genes. An F2 population segregating for Lr24 and Lr48 in the background of PBW343 was utilized for this study. Though phenotypic reaction of the plants of the progeny populations to leaf rust infection was recorded in the seedling stage, it was difficult to perform the same in the adult plant stage as more than one gene effective against the same pathogen act mutually thus making it difficult to interpret and differentiate the resistance reaction of each of the two different genes. This is a major aspect of concern for many plant breeders in various gene pyramiding experiments since differentiating virulences of pathogens for each and every gene utilized cannot be available within all geographic locations. Molecular markers play a significant role in all such cases.


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