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United States Department of Agriculture

Agricultural Research Service

Title: Opportunities for the development of rice blast resistant cultivars/germplasm

Authors
item Jia, Yulin
item Zhonghua, Wang -
item Singh, Pratibha - UA RREC
item Fjellstrom, Robert
item Correll, James - UA PLANT PATH.
item Lee, Fleet - UA RREC
item Eizenga, Georgia
item Gealy, David
item Gibbons, James - UA RREC
item Moldenhauer, Karen - UA RREC

Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: July 27, 2002
Publication Date: September 11, 2002
Citation: Jia, Y., Zhonghua, W., Singh, P., Fjellstrom, R.G., Correll, J., Lee, F.N., Eizenga, G.C., Gealy, D.R., Gibbons, J., Moldenhauer, K.A., Rutger, N., McClung, A., Marchetti, T. 2002. Opportunities for the development of rice blast resistant cultivars/germplasm [abstract]. Proceedings of the Third International Rice Blast Conference. p. 116.

Technical Abstract: Rice blast is the most serious rice disease in the USA. Both conventional and novel strategies for the development of resistant rice cultivars/germplasm have been employed in the U.S. rice breeding programs. The objectives are to develop molecular markers for stacking major resistance genes into improved germplasm and to develop novel strategies for engineering durable resistance to rice blast fungus Magnaporthe grisea. Dominant markers using cloned blast resistance genes Pi-ta and Pi-b have been developed for rice breeders to use in marker assisted selection. Co-dominant microsatellite markers have been developed to stack resistance genes in improved rice germplasm and for fine mapping the Pi-ta locus. Progress in dissecting molecular mechanisms of blast resistance using a combination of genetic, pathological and molecular approaches will be presented.

Last Modified: 4/24/2014