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United States Department of Agriculture

Agricultural Research Service

Research Project: GENETIC AND CULTURAL METHODS TO MANAGE RENIFORM NEMATODE IN COTTON

Location: Crop Genetics Research Unit

Title: Reniform nematode (Rotylenchulus reniformis) resistance locus from Gossypium aridum identified and introgressed into upland cotton (G. hirsutum)

Authors
item Romano, Gabriela
item Sacks, Erik
item Stetina, Salliana
item Robinson, Arin
item Fang, David
item Gutierrez, Osman -
item Scheffler, Jodi

Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: July 13, 2009
Publication Date: December 1, 2009
Citation: Romano, G.B., Sacks, E.J., Stetina, S.R., Robinson, A.F., Fang, D.D., Gutierrez, O.A., Scheffler, J.A. 2009. Reniform nematode (Rotylenchulus reniformis) resistance locus from Gossypium aridum identified and introgressed into upland cotton (G. hirsutum). Journal of Nematology. 41(4):375-376.

Technical Abstract: SSR markers associated with reniform nematode (Rotylenchulus reniformis) resistance were identified and mapped using progeny from a cross between a tri-species hybrid [Gossypium arboreum × (G 371 - G. hirsutum × G. aridum -)] and G. hirsutum MD51ne. The 50 most resistant and 26 most susceptible progeny were genotyped with 104 markers. Of these, 25 markers were associated with a resistance locus. Two markers, BNL 3279_132 and BNL 2662_090, were mapped within 1 cM of the locus. Results indicate that the resistance is simply inherited, possibly controlled by a single dominant gene. Because the SSR fragments associated with resistance were found in G. aridum and the progenitor G 371 (G. hirsutum × G. aridum), G. aridum is the likely source of this resistance. The availability of this source of resistance in a G. hirsutum background, along with related molecular markers, should facilitate development of cotton cultivars with a high level of resistance to reniform nematode.

Last Modified: 4/16/2014
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