Journal
THEORETICAL AND APPLIED GENETICS
Volume 120, Issue 1, Pages 139-150Publisher
SPRINGER
DOI: 10.1007/s00122-009-1165-4
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Funding
- Cotton Inc.
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In this association mapping study, a tri-species hybrid, [Gossypium arboreum x (G. hirsutum x G. aridum)(2)], was crossed with MD51ne (G. hirsutum) and progeny from the cross were used to identify and map SSR markers associated with reniform nematode (Rotylenchulus reniformis) resistance. Seventy-six progeny (the 50 most resistant and 26 most susceptible) plants were genotyped with 104 markers. Twenty-five markers were associated with a resistance locus that we designated Ren (ari) and two markers, BNL3279_132 and BNL2662_090, mapped within 1 cM of Ren (ari) . Because the SSR fragments associated with resistance were found in G. aridum and the bridging line G 371, G. aridum is the likely source of this resistance. The resistance is simply inherited, possibly controlled by a single dominant gene. The markers identified in this project are a valuable resource to breeders and geneticists in the quest to produce cotton cultivars with a high level of resistance to reniform nematode.
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