Wheat Resistance to Stripe and Leaf Rusts Conferred by Introgression of Slow Rusting Resistance Genes
| Autor: | Reda Ibrahim Omara, Yasser S. Mostafa, Atef Abdelfattah Shahin, Mohamed Hashem, Mohsen Mohamed Elsharkawy, Saad Alamri, Shaimaa Ahmed |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Microbiology (medical) molecular markers QH301-705.5 Introgression Plant Science 01 natural sciences rusts Article 03 medical and health sciences Disease severity wheat Genotype Biology (General) Gene Ecology Evolution Behavior and Systematics Puccinia triticina biology Resistance (ecology) biology.organism_classification breeding for resistance Horticulture 030104 developmental biology resistant cultivars Seedling 010606 plant biology & botany Field conditions |
| Zdroj: | Journal of Fungi Volume 7 Issue 8 Journal of Fungi, Vol 7, Iss 622, p 622 (2021) |
| ISSN: | 2309-608X |
| DOI: | 10.3390/jof7080622 |
| Popis: | Twenty-three wheat genotypes were evaluated for stripe and leaf rusts, caused by Puccinia striiformis f. sp. tritici and Puccinia triticina f. sp. tritici, respectively, at seedling and adult stages under greenhouses and field conditions during the 2019/2020 and 2020/2021 growing seasons. The race analysis revealed that 250E254 and TTTST races for stripe and leaf rusts, respectively were the most aggressive. Eight wheat genotypes (Misr-3, Misr-4, Giza-171, Gemmeiza-12, Lr34/Yr18, Lr37/Yr17, Lr46/Yr29, and Lr67/Yr46) were resistant to stripe and leaf rusts at seedling and adult stages. This result was confirmed by identifying the resistance genes: Lr34/Yr18, Lr37/Yr17, Lr46/Yr29, and Lr67/Yr46 in these genotypes showing their role in the resistance. Sids-14 and Shandweel-1 genotypes were susceptible to stripe and leaf rusts. Twelve crosses between the two new susceptible wheat genotypes and the three slow rusting genes (Lr34/Yr18, Lr37/Yr17, and Lr67/Yr46) were conducted. The frequency distribution of disease severity (%) in F2 plants of the twelve crosses was ranged from 0 to 80%. Resistant F2 plants were selected and the resistance genes were detected. This study is important for introducing new active resistance genes into the breeding programs and preserving diversity among recently released wheat genotypes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|