Biometrical Characterization of Wheat Genotypes for Resistance Against Yellow Rust Under Semi-Arid Climate
DOI:
https://doi.org/10.33866/phytopathol.037.01.1260Keywords:
Wheat, Diseases, Yellow Rust, Puccinia striiformis f. sp. Tritici, Screening, Resistance, Food security, GenotypeAbstract
Wheat (Triticum aestivum L.) is the staple food crop of Pakistan fulling the daily caloric need of the country. Yellow rust (YLwRST) is among the most perilous disease affecting the wheat crop. Emergence of novel races of rust pathogens is making it difficult to curtail the loses caused by this disease. Development of resistant varieties is now vital to effectively manage the disease. Thus the present study was conducted, in the research field of the Department of Plant Pathology, College of Agriculture, University of Sargodha, to find out the disease response (DS) and disease severity (DS) of the 533 genotypes, against YLwRST, acquired from National Agriculture Research Council (NARC), Islamabad. The genotypes were screened against YLwRST in the semi-arid climate of Sargodha. Genotypes were sown in augmented design without replication. The results delineated that 68 genotypes were immune to YLwRST. The genotypes that showed resistant, moderately resistant (MR), moderately susceptible (MS) and susceptible responses to YLwRST included 96, 139, 173 and 57 genotypes, respectively. AUDPC based interpretation of varieties was also performed and it was found that the genotypes showed varying values of AUDPC. It is apprised that the genotypes, that were found resistant to YLwRST can be employed in future breeding programs either to find out a specific gene or a combination of genes in such genotypes to evolve durable highly resistant cultivars.References
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