ARS | Publication request: Nematode resistance and agronomic performance of LONREN and NEMSTACK lines

Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Abstract Only
Publication Acceptance Date: October 21, 2008
Publication Date: January 8, 2009
Citation: Bell, A.A., Starr, J.L., Jones, J.E., Lemon, R.G., Nichols, R.L., Overstreet, C., Stelley, D.M. 2009. Nematode resistance and agronomic performance of LONREN and NEMSTACK lines. Proceedings of Beltwide Cotton Conferences, January 5-8, 2009, San Antonio, Texas. p51.

Technical Abstract: LONREN lines have resistance to reniform nematodes that was obtained from Gossypium longicalyx. The NEMSTACK lines have the same resistance recombined with the rkn-1 gene for resistance to root knot nematode from 'Acala NemX.' Different LONREN lines vary depending on whether the resistance gene was introgressed into the long arm of chromosome 11 or 21, and in the size and makeup of the introgressed chromosome segment. In 2006, 2007, and 2008, a total of 41 LONREN lines and eight NEMSTACK lines were evaluated for resistance to reniform nematodes in the greenhouse and in the field at College Station, Texas, and St. Joseph, Louisiana. The lines were grown also in a field free of nematodes at College Station. Nematode populations, yields, fiber quality and sensitivity to pesticides were determined. Results will be presented and discussed.