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ARS Home » Plains Area » College Station, Texas » Southern Plains Agricultural Research Center » Crop Germplasm Research » Research » Publications at this Location » Publication #326811

Title: Registration of two upland cotton germplasm lines possessing superior fiber quality traits

item Percy, Richard
item Campbell, Benjamin - Todd
item JONES, DON - Cotton, Inc

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/22/2016
Publication Date: 9/8/2016
Citation: Percy, R.G., Campbell, B.T., Jones, D.C. 2016. Registration of two upland cotton germplasm lines possessing superior fiber quality traits. Journal of Plant Registrations. 11:1.

Interpretive Summary: There is a need to improve fiber quality in U.S. upland cotton to meet increasing processing and end-use demands and to maintain the competitive position of U.S. cotton in a global market. To meet this need, two exceptionally high fiber quality cotton lines possessing commercially acceptable agronomic and yield traits have been developed and released to private and public cotton improvement efforts. Use of these lines in the development of new cultivars is expected to benefit the American farmer and the U.S. industry, while providing the consumer with a superior product.

Technical Abstract: The upland cotton (Gossypium hirsutum L.) sib germplasm lines PX06520-42-2-1 (Reg. No.GP-1005, PI677343) and PX06520-42-2-3 (Reg. No.GP-1006, PI677344) were developed, evaluated, and jointly released in 2016 by the Agricultural Research Service, United States Department of Agriculture and Cotton Incorporated. The purpose of the release was to provide broadly adapted, high fiber quality resources for facilitating fiber improvement efforts across the U.S. cotton belt. PX06520-42-2-1 and PX06520-42-2-3 originated from the cross SG747/NM49//AGC85/4364-43, followed by individual plant selection in the F2, F3, and F4 generations. In 2011 and 2012, selected F4.5 and F4.6 progeny were evaluated in replicated tests conducted at College Station, TX and Florence, SC. The two best progeny were entered into the Regional Breeders Testing Network (RBTN) tests in 2013 and 2014 at 13 and 11 locations across the U.S. upland cotton belt. In 2013, both PX06520-42-2-1 and PX06520-42-2-3 were superior to the check cultivars DP 393, FM 958, and SG 105 for fiber length, fiber length uniformity, fiber strength, and short fiber content. In 2014, PX06520-42-2-1 produced a fiber length, fiber length uniformity, and fiber strength that were superior to the five check cultivars DP 393, FM 958, SG 105, UA 222, and DP 491. Fiber strength values of PX06520-42-2-1 and PX06520-42-2-3 were far in excess of the strength values of the commercial checks. Fiber yield of PX06520-42-2-1 did not differ significantly from any of the five check cultivars used in 2014. The two lines are excellent sources of fiber quality, with acceptable yield potentials that appear to be stable across production environments.