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United States Department of Agriculture

Agricultural Research Service

Research Project: INTEGRATED MANAGEMENT OF PLANT-PARASITIC NEMATODES IN COTTON AND PEANUT

Location: Crop Protection and Management Research

Title: Registration of GA 120R1B3 Germplasm Line of Cotton

Authors
item Davis, Richard
item Chee, P.W. -
item Lubbers, E.L. -
item May, O.L. -

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: November 18, 2010
Publication Date: April 22, 2011
Citation: Davis, R.F., Chee, P., Lubbers, E., May, O. 2011. Registration of GA 120R1B3 Germplasm Line of Cotton. Journal of Plant Registrations. 5:384-387.

Interpretive Summary: GA 120R1B3 is a breeding line of cotton (Gossypium hirsutum L.) jointly released by the USDA Agricultural Research Service and the Agricultural Experiment Station at the University of Georgia in 2010. GA 120R1B3 was developed from crossing the germplasm lines M-120 RNR and PD 94042. GA 120R1B3 combines the resistance to Meloidogyne incognita (the 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 which is equivalent to the resistance found in M-120 RNR, but GA120R1B3 has significantly better lint percentage and fiber quality than M-120 RNR. GA 120R1B3 has yield and fiber quality generally comparable to commercial cultivars, and a lint percentage that was often greater than the commercial standards. GA 120R1B3 had good yield and excellent fiber quality in both the presence and absence of M. incognita.

Technical Abstract: GA 120R1B3 is a non-commercial breeding line of cotton (Gossypium hirsutum L.) jointly released by the USDA Agricultural Research Service and the Agricultural Experiment Station at the University of Georgia in 2010. GA 120R1B3 was created using a single-seed decent method in a backcrossing program to combine the resistance to Meloidogyne incognita (the 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 which is equivalent to the resistance found in M-120 RNR, but GA120R1B3 has significantly better lint percentage and fiber quality than M-120 RNR. GA 120R1B3 has yield and fiber quality generally comparable to commercial cultivars, and a lint percentage that was often greater than the commercial standards. GA 120R1B3 had good yield and excellent fiber quality in both the presence and absence of M. incognita.

Last Modified: 7/28/2014
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