Premium
Identification and mapping of adult‐plant stripe rust resistance in soft red winter wheat cultivar ‘ USG 3555’
Author(s) -
Christopher Mark D.,
Liu Shuyu,
Hall Marla D.,
Marshall David S.,
Fountain Myron O.,
Johnson Jerry W.,
Milus Eugene A.,
GarlandCampbell Kimberly A.,
Chen Xianming,
Griffey Carl A.
Publication year - 2013
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12015
Subject(s) - biology , quantitative trait locus , cultivar , stem rust , stripe rust , rust (programming language) , introgression , population , plant disease resistance , horticulture , botany , agronomy , genetics , gene , demography , sociology , computer science , programming language
Abstract Little is known about the extent or diversity of resistance in soft red winter wheat ( Triticum aestivum L.) to stripe rust, caused by the fungal pathogen P uccinia striiformis f.sp. tritici . The soft red winter ( SRW ) wheat cultivar ‘ USG 3555’ has effective adult‐plant resistance to stripe rust, which was characterized in a population derived from ‘ USG 3555’/‘Neuse’. The mapping population consisted of 99 recombinant inbred lines, which were evaluated for stripe rust infection type ( IT ) and severity to race PST ‐100 in field trials in N orth C arolina in 2010 and 2011. Genome‐wide molecular‐marker screenings with 119 simple sequence repeats and 560 Diversity Arrays Technology (DArT) markers were employed to identify quantitative trait loci ( QTL ) for stripe rust resistance. QTL on chromosomes 1AS, 4BL and 7D of ‘ USG 3555’ explained 12.8, 73.0 and 13.6% of the variation in stripe rust IT , and 13.5, 72.3 and 10.5% of the variation in stripe rust severity, respectively. Use of these and additional diagnostic markers for these QTL will facilitate the introgression of this source of stripe rust resistance into SRW wheat lines via marker‐assisted selection.