Evaluation of Spring Wheat Germplasm for Resistance to Bacterial Leaf Streak Caused by Xanthomonas campestris pv. translucens

Abstract

Kandel, Y. R., Glover, K. D., Tande, C. A., and Osbome, L. E. 2012. Evaluation of spring wheat germplasm for resistance to bacterial leaf streak caused by Xanthomonas campestris pv. translucens. Plant Dis. 96:1743-1748.Bacterial leaf streak (caused by Xanthomonas campestris pv. translucens) has reemerged as a potential threat in spring wheat {Triticum aestivum) production areas in the northern Great Plains. As with other foliar bacterial diseases, chemical control under field situations is neither economical nor practical. Development of resistant genotypes will be needed for adequate management of the disease. There is currently limited information on sources of resistance in hard spring wheat germplasm. The main objective was to develop and apply a robust screening tool for evaluating germplasm against bacterial leaf streak, and to identify resistance sources for this disease. Inoculated field experiments were conducted in Brookings and Codington Counties, SD in 2009 and 2010 using a virulent local isolate {XctSD-017) inocu-lated after tillering stage. Eorty-five hard red spring wheat genotypes with diverse genetic backgrounds were evaluated for disease severity, with ratings made at 7-day intervals from heading through dough stage. Results of this study showed clear differences in level of resistance among the 45 genotypes, with no immunity expressed.

Use of Genotype by Yield*Trait (GYT) Analysis to Select Hard Red Spring Wheat with Elevated Performance for Agronomic and Disease Resistance Traits

“…Nearly all methods utilized for inoculation, resistance evaluation, and data collection in the disease nurseries were consistent with those routinely employed by the SDSU-HRSW breeding program [18,19] [19].…”

Effect of Seed Treatment on Early Season Brown Spot Caused by Septoria glycines of Soybean

“…where y i = the number of leaflets with brown spot per pot at observation time and t i+1 -t i denotes number of days between the subsequent observation dates (Kandel et al 2012).…”

The translucens group of Xanthomonas translucens: Complicated and important pathogens causing bacterial leaf streak on cereals

“…Because no chemical control is available, host resistance appears to be the only way to control wheat BLS. Several sources of BLS resistance have been identified in diverse wheat or barley germplasm and related species (Hagborg, ; Akhtar and Aslam, ; Duveiller et al , ; Alizadeh et al , ; El Attari et al , ; Milus et al , ; Tillman et al , ; Adhikari et al , ; Kandel et al , ; Sapkota et al , ). These studies revealed a low percentage of resistant lines and no immune or highly resistant materials were found in the wheat germplasm.…”

“…Since then, BLS has been found in many places in the United States with outbreaks and epidemics mostly having occurred in the southeastern regions (Milus and Mirlohi, 1994;Tubajika et al, 1999). In recent years, the incidence of BLS has increased in the Upper Midwest region of the United States, including North Dakota, Minnesota, and South Dakota (Adhikari et al, 2012a;Kandel et al, 2012;Curland et al, 2018).…”