Assessment of Genetic Diversity for Stem Rust and Stripe Rust Resistance in an International Wheat Nursery Using Phenotypic and Molecular Technologies
نویسندگان
چکیده
The objective of this study was to assess diversity for stem rust and stripe resistance in an international wheat screening nursery under greenhouse conditions using pathotypes with known avirulence/ virulence profiles. A set 95 entries collected from material generated by staff the International Maize Wheat Improvement Centre (CIMMYT) tested against seven Australian Pgt five Pst through artificial inoculation standard procedures. Ten all-stage genes (Sr8a, Sr8b, Sr9b, Sr12, Sr17, Sr23, Sr24, Sr30, Sr31 Sr38) (Yr3, Yr4, Yr6, Yr9, Yr17, Yr27 Yr34) were postulated either singly or combinations based on seedling responses test differing commonly deployed genes. Sr30 Sr38 most common nursery. Sr38-linked gene Yr17 present high proportion. presence Sr31/Yr9, Sr38/Yr17 Yr4 confirmed closely linked molecular markers. adult plant (APR) Sr2 Lr34/Yr18/Sr57 detected markers csSr2 csLV34, respectively. Genotypes carrying identified use as donor sources breeding programs.
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ژورنال
عنوان ژورنال: Uganda Journal of Agricultural Sciences
سال: 2021
ISSN: ['2410-6909', '1026-0919']
DOI: https://doi.org/10.4314/ujas.v20i1.1