Location: Crop Genetics ResearchTitle: Registration of cotton germplasm line md 10-5
Submitted to: Journal of Plant Registrations
Publication Type: Germplasm Registration
Publication Acceptance Date: 11/23/2015
Publication Date: 1/4/2016
Publication URL: http://handle.nal.usda.gov/10113/62076
Citation: Zeng, L., Manning, R.O. 2016. Registration of cotton germplasm line md 10-5. Journal of Plant Registrations. 10:47-50. doi: 10.3198/jpr2015.08.0047crg.
Interpretive Summary: Genetic improvement of both lint yield and fiber quality in Upland cotton is difficult due to negative associations between lint yield and fiber quality. A cotton germplasm line, MD 10-5, was selected from progenies derived from a cross between a high fiber quality parent, MD 15, and a high yield parent, JJ1145ne. The germplasm line, MD 10-5, was released to the public for its high lint yield and high fiber quality, especially fiber strength. MD 10-5 had the highest lint yield and the highest fiber strength among all testing entries in the yield trials conducted at multiple locations across major cotton production regions in the U.S. in 2012 and 2013. The release of MD 10-5 will provide cotton breeders opportunities to improve both lint yield and fiber quality and make the U.S. cotton more competitive in the global market.
Technical Abstract: MD 10-5 (Reg. No. ______, PI 675077) is a noncommercial breeding line of cotton (Gossypium hirsutum L.) released by the USDA-ARS at Stoneville, MS in 2015. MD 10-5 was selected in F4 progenies from a cross between MD 15 (PI 642769) and JJ 1145ne. MD 10-5 has a desirable combination between lint yield and fiber properties, especially fiber strength. It produces lint yield higher than or comparable to the high yielding commercial cultivars and possesses fiber strength higher than or close to noncommercial germplasm lines known for high fiber quality. Other fiber properties including fiber length, elongation, uniformity, micronaire, and yarn tenacity were generally comparable to the high fiber quality checks. MD 10-5 was mainly selected and evaluated in the mid-south United States, but it was also evaluated across 14 locations in the U.S. Cotton Belt. It displays a broad adaptation to different environments in the U.S. cotton production regions. MD 10-5 provides opportunities for cotton breeders to improve both lint yield and fiber quality in Upland cotton.