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ARS Home » Southeast Area » Stoneville, Mississippi » Crop Genetics Research » Research » Publications at this Location » Publication #343214
Title: Registration of cotton germplasm USDA MD 16-1 and USDA MD 16-2 with enhanced lint yield and fiber quality

Author
item Bechere, Efrem
item Manning, Rex

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 12/4/2017
Publication Date: 2/8/2018
Citation: Bechere, E., Manning, R.O. 2018. Registration of cotton germplasm USDA MD 16-1 and USDA MD 16-2 with enhanced lint yield and fiber quality. Journal of Plant Registrations. 12(2):241-245. https://doi.org/10.3198/jpr2017.07.0043crg.
DOI: https://doi.org/10.3198/jpr2017.07.0043crg

Interpretive Summary: Two high yielding and good quality cotton germplasm lines called USDA MD 16-1 and USDA MD 16-2 were developed by the cotton genetics program at Stoneville, MS. These germplasm performed very well in tests at Stoneville (2012-2016) and the Regional Breeder Testing Network (RBTN) in Southeastern U.S.A during 2015 and 2016. The RBTN included twenty eight to thirty six breeding lines and five check cultivars grown in thirteen locations across the region. USDA MD 16-1 was the highest yielder across these locations (1700 kg/ha). USDA MD 16-2, on the other hand, had lower yield than USDA MD 16-1 but significantly stronger fiber than all entries (36.2 g/tex). Correlations of lint yield and fiber quality in these new germplasm are much higher than previously reported giving hope to the complete breakage of this unwanted relationship in the not too far distance.

Technical Abstract: Upland cotton germplasm USDA MD 16-1 (Reg. No. __ and PI ___ ), and USDA MD 16-2 (Reg. No. ___ and PI___) (Gossypium hirsutum L.), have enhanced yield and good fiber quality. These germplasm lines were developed by the USDA-ARS, Stoneville, MS and released in 2017. Two crosses, MD 25-51 X MD 10-9-1 and MD 25-51 X MD 10-9-10 were made at Jamie Whitten Delta State Research Center, USDA-ARS, Stoneville, in 2010. The F1 was grown at the winter nursery in Mexico in 2010. The F2 populations were planted at Stoneville in 2011. One boll per plant was bulked and the F3 grown in 2012. This process was repeated during 2013 (F4). In 2014, individual plants (F5) were selected for progeny rows. One plant from MD 25-51 X MD 10-9-1 (named USDA MD 16-1) and another plant from MD 25-51 X MD 10-9-10 (named USDA MD 16-2) were identified for their superior lint yield and fiber quality. From 2012 to 2016, USDA MD 16-1 and USDA MD 16-2 were planted along with the check varieties in randomized complete designs at Stoneville, and also tested in the 2015 and 2016 Regional Breeder Testing Network (RBTN) at Stoneville, and in the 2016 RBTN at Keiser, AR and the 2016 RBTN test across 13 locations in the South East. Data was collected on lint yield, fiber length, fiber strength, micronaire and uniformity. Data at Stoneville, across five years indicated that both USDA MD 16-1and USDA MD 16-2 had 8 to 14 % and 2 to 7 % higher lint yield than the two check varieties MD 25 and MD 10-5, respectively. USDA MD 16-1 had the third highest lint yield when compared to the 36 breeding lines in the 2015 RBTN, and the second highest lint yield when compared to the 34 breeding lines in the 2016 RBTN at Stoneville. In the 2016 RBTN across 13 locations, USDA MD 16-1 was the top yielder (1710 kg/ha) and USDA MD 16-2 had the strongest fiber (36.2 g/tex). These values were significantly different than all values obtained for all other entries in the test.