2011 Annual Report
The Eighth Winter Wheat Karnal Bunt Screening Nursery (WWKBSN) was prepared in August, 2009 from entries received from various winter wheat breeding programs. It included replicated entries of many lines that have shown good resistance in past years. It also included a doubled haploid population for mapping Karnal bunt (KB) resistance genes. The nursery was sent for evaluation to CIMMYT in Mexico and to Punjab Agricultural University (PAU) in India. In addition, reserve seed from resistant entries from previous years were also tested. Cooperators at each organization artificially inoculated each entry with Karnal Bunt in early spring, 2011. A site visit to Obregon, Mexico was done in April, 2011 to rate materials for resistance. A few materials with consistently good levels of KB resistance have been identified through the cooperative screening of the WWKBSN at CIMMYT and in India. These include some backcross lines with the cultivar Jagger and some synthetic-derived lines in a Karl92 background. None of these materials have shown immunity, but their level of resistance to KB is probably sufficient to give protection at the field level. Results in 2011 for the mapping population were consistent with previous years’ results.
Progress on this agreement is monitored by regularly discussing program goals, approaches, and results (teleconference, email), on-site visits, and by reviewing annual accomplishments reports.