alexa Characterization of Slow Rusting Resistance against Puccinia striiformis f. sp. tritici in Candidate and Released Bread Wheat Cultivars of Pakistan
ISSN: 2157-7471

Journal of Plant Pathology & Microbiology
Open Access

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Research Article

Characterization of Slow Rusting Resistance against Puccinia striiformis f. sp. tritici in Candidate and Released Bread Wheat Cultivars of Pakistan

Syed Jawad Ahmad Shah1,2*, Shaukat Hussain3, Musharaf Ahmad3, Farhatullah4 and Muhmmad Ibrahim1

1Nuclear Institute for Food and Agriculture (NIFA) Tarnab, Peshawar, Pakistan

2Department of Plant Pathology, Washington State University, Pullman, USA

3Department of Plant Pathology, NWFP Agricultural University, Peshawar, Pakistan

4Department of Plant Breeding and Genetics, NWFP Agricultural University, Peshawar, Pakistan

*Corresponding Author:
Syed Jawad Ahmad Shah
Department of Plant Pathology
Washington State University, Pullman, USA
Tel: 509-423-4056
E-mail: [email protected], [email protected]

Received date: March 11, 2014; Accepted date: March 29, 2014; Published date: April 09, 2014

Citation: Shah SJA, Hussain S, Ahmad M, Farhatullah, Ibrahim M (2014) Characterization of Slow Rusting Resistance against Puccinia striiformis f. sp. tritici in Candidate and Released Bread Wheat Cultivars of Pakistan. J Plant Pathol Microb 5:223. doi:10.4172/2157-7471.1000223

Copyright: © 2014 Shah SJA, 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.

 

Abstract

A set of 50 candidate and released bread wheat cultivars of Pakistan were studied to identify slow rusting resistance against yellow rust caused by Puccinia striiformis f. sp. tritici (PST). Seedling tests were done under glasshouse conditions at Thiverval-Grignon, INRA, France while slow rusting resistance was evaluated during 2005-07 in field plots using epidemiological variables at Peshawar, Pakistan. Twenty nine cultivars (58%) displayed susceptibility against the two PST races used in the seedling tests. Epidemiological parameters of resistance at the adult-plant stage were significantly (P<0.01) different for years, cultivars and cultivar x year interactions over three years. Analyses were done for sequence tagged site (STS) marker, csLV34 at INRA and revealed that 40% of the tested cultivars possessed adult plant resistance gene Yr18 linked allele of 150 bp. Of the 50 cultivars evaluated under field trials, 11 were highly resistant to both PST races as in the seedling tests and 39 showed different levels of slow rusting. Cultivars Bakhtawar-93, Punjab-96, Bahawalpur-95, V-00183 and V-00125 were relatively more stable over 3-years as Final Rust Severity (FRS), Area Under Disease Progress Curve (AUDPC) and Infection Rate (r) values were 74, 81, and 63% less of the susceptible control, Morocco, respectively. These cultivars also possessed the marker linked to Yr18 and could be exploited for the deployment of Yr18 in breeding for slow rusting in wheat. Both FRS and ACI are suitable parameters and can be used for phenotypic selection in a wheat breeding program for slow rusting resistance.

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