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ARS Home » Southeast Area » Tifton, Georgia » Crop Protection and Management Research » Research » Publications at this Location » Publication #304202

Research Project: Insect Ecology and Sustainable Systems for Insect Pest Management in the Southeastern Region

Location: Crop Protection and Management Research

Title: Registration of maize inbred line 'GT888'

Author
item Scully, Brian
item Krakowsky, Matthew
item Ni, Xinzhi
item Tapp, Penny
item Knoll, Joseph - Joe
item Lee, R - University Of Georgia
item Guo, Baozhu

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/24/2014
Publication Date: 10/9/2015
Citation: Scully, B.T., Krakowsky, M.D., Ni, X., Tapp, P.J., Knoll, J.E., Lee, R.D., Guo, B. 2015. Registration of maize inbred line 'GT888'. Journal of Plant Registrations. 10:87-92.

Interpretive Summary: In the southern U.S., corn crops are often contaminated with a potent natural carcinogen known as aflatoxin. It is produced by the fungus Aspergillus flavus that typically infects the developing ears and kernels, and the production of aflatoxin is usually more severe when the crop is subjected to abiotic and/or biotic stress. A diversity of protective and preventative measure have been developed and employed to exclude this contaminant from the food and feed supply. One reliable tactic is the development of corn germplasm with resistance to aflatoxin contamination. GT888 is a corn inbred line that was developed in Tifton GA for improved resistance to aflatoxin contamination and adaptation to the southern U.S. It resulted from a pedigree breeding program that advanced from material initially developed from the Germplasm Enhancement of Maize (GEM) project. GT888 is a yellow dent inbred that has been determined to be a non-stiff stalk inbred that tassels five to eight days later than the common non-stiff stalk standards.

Technical Abstract: Maize (Zea mays L.) inbred line GT888 (PI 670116) was developed and released by the USDA-ARS in cooperation with the University of Georgia, and in participation with the USDA Germplasm Enhancement of Maize (GEM) project. GT888 was derived from GEM population DK888:N11 (GEMN-0177), which has 50% tropical and 50% temperate parentage. GT888 is a yellow dent inbred that was selected through a pedigree breeding program for improved resistance to aflatoxin contamination produced by the causal organism Aspergillus flavus (Link ex Fr.). It was compared to three inbreds including Mp 313E, Mp 717, and Mp 719, which are known standards that resist aflatoxin contamination. This inbred also exhibited heterosis when crossed to stiff stalk testers B 14, B 73 and LH 132, which confirmed its assignment to the non-stiff stalk group. GT888 tasseled and silked approximately five to eight days later than a cohort of non-stiff stalk standards.