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Using a linkage mapping approach to identify QTL for day‐neutrality in the octoploid strawberry
Author(s) -
Weebadde C. K.,
Wang D.,
Finn C. E.,
Lewers K. S.,
Luby J. J.,
Bushakra J.,
Sjulin T. M.,
Hancock J. F.
Publication year - 2008
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.1439-0523.2007.01430.x
Subject(s) - quantitative trait locus , biology , amplified fragment length polymorphism , genetics , genetic linkage , fragaria , population , family based qtl mapping , linkage (software) , trait , gene mapping , gene , genetic diversity , demography , sociology , chromosome , computer science , programming language
A linkage mapping approach was used to identify quantitative trait loci (QTL) associated with day‐neutrality in the commercial strawberry, Fragaria × ananassa (Duch ex Rozier). Amplified Fragment Length Polymorphism (AFLP) markers were used to build a genetic map with a population of 127 lines developed by crossing the day‐neutral (DN) ‘Tribute’ with the short‐day (SD) ‘Honeoye’. The population was genotyped with AFLP markers and 429 single dose restriction fragments (SDRF) were placed on a consensus map of 1541 cM with 43 linkage groups. Individuals from the mapping population were observed for their flowering habit throughout the growing season in Michigan (MI), Minnesota (MN), Maryland (MD), Oregon (OR) and California (CA). Eight QTL were found that were either location specific or shared among locations. None of these QTL explained >36% of the phenotypic variation, indicating that the inheritance of day‐neutrality is likely a polygenic trait.