We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Mapping and Confirmation of a New Allele at Rpp1 from Soybean PI 594538A Conferring RB Lesion—Type Resistance to Soybean Rust.
- Authors
Chakraborty, Nanda; Curley, Joe; Frederick, Reid D.; Hyten, David L.; Nelson, Randall L.; Hartman, Glen L.; Diers, Brian W.
- Abstract
Soybean rust, caused by Phakopsora pachyrhizi (H. Sydow & Sydow), is a destructive soybean [Glycine max (L.) Merr.] disease and identification of new resistance genes is essential for effective rust management. Our research objectives were to map and confirm the location of resistance gene(s) in PI 594538A using a population of 98 F3:4 lines from a cross between PI 594538A (reddish-brown [RB] lesions) and the susceptible cultivar Loda (tan [TAN] lesions). The lines were inoculated with the P. pachyrhizi isolate ZM01-1 from Zimbabwe. The RB resistance in PI 594538A mapped on linkage group G as a single dominant gene. This gene is likely an allele of Rpp1 or a new closely linked gene because it mapped within 1 cM of Rpp1 and ZM01-1 produced RB lesions on PI 594538A and TAN lesions on PI 200492, the original source of Rpp1. The mapping of the new Rpp1 allele, named Rpp1-b, was confirmed in a second population.
- Subjects
RESEARCH; CROP science; AGRICULTURAL productivity; FARM management; PHAKOPSORA pachyrhizi; SOYBEAN rust disease; PLANT genetics
- Publication
Crop Science, 2009, Vol 49, Issue 3, p783
- ISSN
0011-183X
- Publication type
Article
- DOI
10.2135/cropsci2008.06.0335