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ARS Home » Southeast Area » Mississippi State, Mississippi » Crop Science Research Laboratory » Genetics and Sustainable Agriculture Research » Research » Publications at this Location » Publication #333122
Title: Registration of six germplasm lines of cotton, Gosspyium hirsutum L. with resistance to root-knot and reniform nematodes

Author
item McCarty, Jack
item Jenkins, Johnie
item Wubben, Martin
item Hayes, Russell - Russ
item Callahan, Franklin
item Deng, Dewayne

Submitted to: Journal of Plant Registrations
Publication Type: Germplasm Registration
Publication Acceptance Date: 12/8/2016
Publication Date: 4/27/2017
Publication URL: https://handle.nal.usda.gov/10113/5729151
Citation: Mccarty Jr, J.C., Jenkins, J.N., Wubben, M., Hayes, R.W., Callahan, F.E., Deng, D.D. 2017. Registration of six germplasm lines of cotton, Gosspyium hirsutum L. with resistance to root-knot and reniform nematodes. Journal of Plant Registrations. 11:168-171.

Interpretive Summary: Six cotton germplasm lines with resistance to root-knot and reniform nematodes were jointly released by USDA-ARS and the Mississippi Agricultural and Forestry Experiment Station in 2016. The germplasm lines were selected using molecular markers that are associated with nematode resistance. Both root-knot and reniform nematode egg production was much lower on the germplasm lines compared to cultivars in growth chamber tests. The germplasm lines exhibit considerable differences for agronomic and fiber traits such as length, strength and micronaire, and with their high level of nematode resistance they should be valuable to cotton breeding programs.

Technical Abstract: Six Upland cotton, Gossypium hirsutum L., germplasm lines, M Rk-Rn 1, M Rk-Rn 2, M Rk-Rn 3, M Rk-Rn 4, M Rk-Rn 5, and M Rk-Rn 6, with resistance to root-knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, and reniform nematode, Rotylenchulus reniformis Linford and Oliveria, were jointly released by USDA-ARS and the Mississippi Agricultural and Forestry Experiment Station in 2016. The germplasm lines were selected using tightly linked SSR markers, CIR 316, BNL 3661, GH 132, BNL 3279, and BNL 569. Egg production of root-knot and reniform nematodes was suppressed significantly from the susceptible check ‘Sure-Grow 747’ in growth chamber tests. The lines exhibit considerable differences for agronomic and fiber traits such as length, strength and micronaire, and with their high level of nematode resistance they should be valuable to cotton breeding programs. The successful use of marker assisted selection (MAS) for these specific SSR markers further validates their use in selection of nematode-resistant plants in segregating generations.