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United States Department of Agriculture

Agricultural Research Service

Research Project: KARNAL BUNT COOPERATIVE RESEARCH

Location: Hard Winter Wheat Genetics Research Unit

2012 Annual Report


1a.Objectives (from AD-416):
The objectives of this cooperative research are:.
1)develop and test wheat lines with resistance to KB; and.
2)develop and test molecular markers for resistance to KB.


1b.Approach (from AD-416):
Wheat experimental lines have been developed by crossing adapted varieties with different sources of resistance to KB. Wheat lines will be tested for resistance to KB in the field in India. Genetic mapping populations and near isogenic lines will be developed to identify and validate molecular markers for KB resistance genes. Molecular marker genotyping will be done in India and the USA. Data will be analyzed cooperatively.


3.Progress Report:

This is the final year of the cooperative Karnal Bunt field screening project in India. Many wheat lines that showed resistance in previous years again showed moderate to good resistance in the 2012 nursery. A doubled haploid mapping population between a source of very high resistance and a susceptible line was evaluated for the fourth year. This population will be genotyped in the coming year by ARS researchers in Manhattan, KS. Data will be analyzed to find the locations of resistance genes for Karnal Bunt. A backcrossing program using Jagger as the recurrent parent is at the fourth backcross generation. We now have a derivative of Jagger with very good agronomic type and very good resistance to Karnal Bunt.


Last Modified: 8/27/2014
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