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Molecular Genetic Linkage Map for Allotetraploid Colonial Bentgrass
Author(s) -
Rotter David,
Amundsen Keenan,
Bonos Stacy A.,
Meyer William A.,
Warnke Scott E.,
Belanger Faith C.
Publication year - 2009
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2008.12.0714
Subject(s) - biology , introgression , backcrossing , agrostis stolonifera , population , plant disease resistance , genetic marker , genetics , botany , gene mapping , gene , poaceae , chromosome , demography , sociology
Interspecific hybridization is a widely used approach to improve crop species. We are pursuing the possibility of using interspecific hybridization between the turfgrass species colonial bentgrass ( Agrostis capillaris L.) and creeping bentgrass ( A. stolonifera L.) for the improvement of resistance to the fungal disease dollar spot ( Sclerotinia homoeocarpa F.T. Bennett) in creeping bentgrass. From a field evaluation of a backcross population, it appears that introgression of dollar spot resistance from colonial bentgrass to creeping bentgrass is possible. We used the backcross population to generate the first genetic linkage map for colonial bentgrass. The map length was 1156 cM and consisted of 212 amplified fragment length polymorphic markers and 110 gene‐based markers. Colonial bentgrass is an allotetraploid species (2 n = 4 x = 28, A 1 and A 2 subgenomes). The map consisted of the expected 14 linkage groups, which could be assigned to either the A 1 or A 2 homoeologous subgenomes. Although there were dollar spot resistant individuals in the mapping population, no quantitative trait loci associated with resistance were detected.