Heritability of Latent Period Estimated from Wild-Type and Selected Populations of Puccinia triticina

Jeffrey S. Lehman, Gregory Shaner
2007 Phytopathology  
Lehman, J. S., and Shaner, G. 2007 . Heritability of latent period estimated from wild-type and selected populations of Puccinia triticina. Phytopathology 97:1022-1029. Durability of partially resistant wheat cultivars to wheat leaf rust depends on the amount of genetic variation in parasitic fitness within populations of the pathogen Puccinia triticina. To assess the durability of partial resistance, selection experiments were used to explore quantitative variation in parasitic fitness of P.
more » ... tic fitness of P. triticina. Fungal populations 881-WT and 882-WT were selected for shortened latent period on partially resistant cvs. CI 13277 and Sw 72469-6 for multiple generations. Fitness components were measured for wild-type and selected fungal populations. Responses to selection and selection differentials were calculated, and broad-sense, realized heritabilities for latent period were estimated for wild-type fungal populations on CI 13227 and on Sw 72469-6. Selected populations had fitness characteristics, not limited to latent Corresponding
doi:10.1094/phyto-97-8-1022 pmid:18943643 fatcat:ldxgtdstqndbldeimu2i67jiai