Katy Deletion (putative) mutant set

The first subset of 15,192 putative mutants were treated by fast neutrons (FN) with 7.7 Gy, 26.3 Gy, and 49.4 Gy. A total of 15,192 M1 panicles were harvested from 15,192 M0 and were subsequently amplified to M4 by single seed breeding method in Stuttgart, AR, from 2003 to 2006. An evaluation of 190 randomly selected plants from the entire population in 2006 verified that they were derived from Katy based on 9 diagnostics simple sequence repeat markers. See the evaluation results - as an Excel table. This population has been used to identify blast susceptible mutants that can be used to study molecular mechanisms of disease resistance (Jia and Martin, 2008). This population will be useful for the identification of rice mutants that correlate with any gene in the rice genome. Click here to view the first GRIN record in the FN set (GSOR 600001-615192).

The second subset of mutants were treated with 0.4%, 0.8%, and 1.2% ethyl methane sulfonate (EMS). A total of 4880 panicles were harvested from 4896 M0 and were subsequently amplified to M4 by single seed breeding method in Stuttgart, AR from 2004 to 2007. This population has been used to identify lesion mimic mutants (Jia 2002) and will be useful for the identification of useful mutants for crop improvement and functional genomics. Click here to view the first GRIN record in the EMS set (GSOR 616001-620880).

The third subset of mutants was treated with gamma irradiation at the rate of 60 Gy. A total of 2769 panicles were harvested from 2769 M0 and were subsequently amplified to M4 by single seed breeding method in Stuttgart, AR from 2004-2007. This population will be useful for the identification of useful mutants for crop improvement and functional genomics. Click here to view the first GRIN record in the IRR set (GSOR 620900-623669).

Please contact the GSOR for information on ordering accessions from this set - gsor@ars-grin.gov