Evaluation of some Egyptian wheat varieties against stem rust at seedling and adult stages | ||
| Journal of Sustainable Agricultural and Environmental Sciences | ||
| Volume 3, Issue 4, September 2024, Pages 19-26 PDF (586.58 K) | ||
| Document Type: Original research paper | ||
| DOI: 10.21608/jsaes.2024.299918.1092 | ||
| Authors | ||
| Naglaa M. Fath EL-Bab1; R. I. Omara2; D. R. El-Naggar2; Hanafey F. Maswada1; Abdelnaser A. Elzaawely* 1 | ||
| 1Department of Agricultural Botany, Faculty of Agriculture, Tanta University, Tanta, Egypt | ||
| 2Plant Pathology Research Institute, Agricultural Research Center, Giza 12619, Egypt | ||
| Abstract | ||
| Stem rust caused by Puccinia graminis f. sp. tritici (Pgt), has been considered the most common rust dis-ease of wheat. Twenty Egyptian wheat varieties were screened for resistance to stem rust infection at both seed-ling and adult stages. At the seedling stage, only Misr-3, Misr-4, Gemmeiza-12, and Giza-171 out of twenty wheat varieties had the highest efficacy against the TTTTF and TKTTC races of P. graminis f. sp. tritici. In contrast, Gemmeiza-9, Gemmeiza-11, Sakha-95, Shandweel-1, Shandweel-2, and Nubaria-2 had the highest efficacy against the second race (TKTTC). Moreover, the Sakha-95 variety was moderately resistant to the TTTTF race, while Gemmeiza-10, Sakha-93, Sakha-94, Giza-168, Sids-13, and Sids-14 were moderately re-sistant to the TKTTC race. Contrary, Misr-1, Misr-2, Gemmeiza-9, Gemmeiza-10, Gemmeiza-11, Sakha-93, Sakha-94, Giza-168, Sids-12, Sids-13, Sids-14, Shandweel-1, Shandweel-2, Nubaria-2, and Morocco had the lowest efficacy against TTTTF race; while, Misr-1, Misr-2, Sids-12, and Morocco had the lowest efficacy against the TKTTC race. At the adult stage, field reaction of stem rust on twenty wheat varieties was recorded as disease severity (%), and the area under the disease progress curve (AUDPC) during three growing seasons (2020-2022). Based on the correlation analysis, the significance of the chosen disease parameters, particularly final rust se-verity (FRS%) was validated. FRS% is considered the more suitable indication, rather than the AUDPC for evaluating wheat varieties against stem rust disease. | ||
| Keywords | ||
| Wheat; Triticum aestivum; stem rust disease; final rust severity; area under disease progress curve | ||
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