Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/31/1998
Publication Date: N/A
Interpretive Summary: Public germplasm development promotes genetic diversity, the long-term viability of commercial variety enhancement, and a secure fiber supply for the U.S. consumer. This research documents the development of PD 94042 cotton germplasm line that combines high yield potential and improved fiber maturity. The high yield potential of PD 94042 makes this germplasm line a avaluable parent for commercial variety development. The improved fiber maturity promotes even dye uptake in yarn manufacture, adding value to textile products for consumers. Seed of PD 94042 has been distributed to all of the commercial variety development firms in the U.S.
Technical Abstract: PD 94042,a cotton germplasm line that combines high yield potential and improved fiber maturity, was developed and released in 1998 by the USDA-ARS and the South Carolina Agricultural Experiment Station. PD 94042 was derived from the cross of 'Jimian 8'/'PD-3'. Jimian 8 was developed by the Cotton Research Institute, Chinese Academy of Agricultural Sciences. Compared with 'Deltapine 51' in the North Carolina and South Carolina Official State Trials, PD 94042 produced about 12% more lint. PD 94042 produced about 7% more lint yield than 'Deltapine 5415' in the South Carolina and Georgia Official State Trials, and about 12% more lint yield than the germplasm line PD-3-14 in trials conducted at Florence, SC, Tifton, GA, and Jay, FL. The lint fraction of PD 94042 averages about 41%, compared with 40% for PD-3-14 and Deltapine 5415. Fiber strength and yarn tenacity of PD 94042 are about 10% less than that of PD-3-14. Compared with PD-3-14,PD 94042 tends to produce fiber with a high micronaire reading. However, the higher micronaire reading of PD 94042 stems from increased fiber maturity rather than coarse fiber. Fiber perimeter of PD 94042 is about the same as that of PD-3-14, while fiber maturity of PD 94042 is about 4% higher. PD 94042 should be useful to breeders and geneticists as a source of high yield and increased fiber maturity.