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GA 120R1B3 (Reg. No. GP-931, PI 660980) is a noncommercial breeding line of cotton (Gossypium hirsutum L.) jointly released by the USDA-ARS and the Agricultural Experiment Station at the University of Georgia in 2010. GA 120R1B3 was created using a single-seed descent method in a backcrossing program to combine the resistance to Meloidogyne incognita (southern root-knot nematode) from M-120 RNR with the high-yielding, high fiber-quality characteristics of PD 94042. Two greenhouse evaluations of nematode reproduction were conducted in 2007. Field evaluations for yield and fiber quality were conducted from 2007 to 2009 and included three tests in fields infested with M. incognita and four tests in fields without M. incognita. GA 120R1B3 has a high level of resistance to M. incognita that is equivalent to that found in M-120 RNR, but GA 120R1B3 has significantly better lint percentage and fiber quality than M-120 RNR. GA 120R1B3 has a yield and fiber quality generally comparable to commercial cultivars and a lint percentage that was often greater than that of the commercial standards. GA 120R1B3 had good yield and excellent fiber quality in both the presence and absence of M. incognita.

The upland cotton (Gossypium hirsutum L.) germplasm line CRB 252 (Reg. No GP-925, PI 658596) was developed, evaluated, and jointly released in 2009 by the USDA-ARS, the Louisiana Agricultural Experiment Station, the Georgia Agricultural Experiment Station, and Cotton Incorporated. The purpose of the release was to provide a broadly adapted, high fi ber-quality resource for facilitating fi ber improvement efforts across the U.S. Cotton Belt. CRB 252 originated from the cross 'Suregrow 248'/'Phytogen 72'//'Stoneville 474'/'Acala Maxxa', followed by individual plant selection in the F2 and F3 generations at the low-desert location of Maricopa, AZ and F3.5 progeny selection at fi ve locations distributed across the Cotton Belt. Evaluation of CRB 252 occurred in 13 location-year environments at Florence, SC; Blackville, SC; Tifton, GA; Plains, GA; Alexandria, LA; Maricopa, AZ; and Shafter, CA in 2007 and 2008. CRB 252 displayed fi ber length and micronaire values superior to those of the high fi ber-quality check cultivars Phytogen 72 and FM 958. The fi ber strength and short-fi ber content of CRB 252 was superior to those of FM 958. Lint yield of CRB 252 was superior to that of Phytogen 72 and did not differ from FM 958. CRB 252 is an excellent source of quality fi ber, with acceptable yield potential that appears to be stable across production environments.