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QTL analysis of resistance to Fusarium head blight in wheat using a ‘Frontana’‐derived population
Author(s) -
Mardi M.,
Pazouki L.,
Delavar H.,
Kazemi M. B.,
Ghareyazie B.,
Steiner B.,
Nolz R.,
Lemmens M.,
Buerstmayr H.
Publication year - 2006
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/j.1439-0523.2006.01228.x
Subject(s) - quantitative trait locus , biology , fusarium , amplified fragment length polymorphism , population , genetic linkage , chromosome , doubled haploidy , inoculation , genetics , plant disease resistance , agronomy , horticulture , gene , genetic diversity , demography , sociology
Fusarium head blight (FHB or head scab) has become a major limiting factor for sustainable wheat ( Triticum aestivum L.) production around the world. For quantitative trait loci (QTL) analysis of resistance to FHB, F 3 plants and F 3 : 5 lines, derived from a ‘Frontana’ (moderately resistant)/‘Seri82’ (susceptible) cross, were spray‐inoculated in 2001 and 2002, respectively. Artificial inoculations were carried out under field conditions. Of 273 SSR and AFLP markers, 250 could be mapped and they yielded 42 linkage groups, covering a genetic distance of 1931 cM. QTL analysis was based on the constructed linkage map and area under the disease progress curve (AUDPC). The analyses revealed three consistent QTLs associated with FHB resistance on chromosomes 1BL, 3AL and 7AS explaining 7.9%, 7.7% and 7.6% of the phenotypic variation, respectively, above 2 years. The results confirmed the previously described resistance QTL of ‘Frontana’ on chromosome 3AL. A combination of ‘Frontana’ resistance with ‘Sumai‐3’ resistance may lead to lines with augmented resistance expression.