A collection of 20 oat genotypes from different sources were evaluated in small isolated field plots for crown rust severity in natural epidemics with virulent P. coronata isolates and further screened with linked molecular markers. Large variation was observed for disease severity under field conditions in spreader plot. Genotypes with partial resistance due to a reduction of disease severity in spite of a compatible interaction (rust score 3) and moderate susceptibility were identified. The twenty genotypes displaying the variable disease severity with visible necrosis were selected for further studies regarding presence or absence of major genes (Pc91 and Pc68) for resistance to crown rust.
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Citation: Ruwali Y, Kumar L, Verma JS (2013) Screening for Resistance to Crown Rust in Oat Genotypes through Morphological and Molecular Parameters. J Plant Pathol Microb 4: 208.
Last date updated on July, 2014