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Title: Registration of WCL-LO4-Gail lesquerella with improved harvest index

Author
item Dierig, David
item Dahlquist, Gail
item Coffelt, Terry
item RAY, DENNIS - University Of Arizona
item Isbell, Terry
item WANG, GUANGYAO - University Of Arizona

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/23/2013
Publication Date: 3/1/2013
Citation: Dierig, D.A., Dahlquist, G.H., Coffelt, T.A., Ray, D.T., Isbell, T., Wang, G. 2013. Registration of WCL-LO4-Gail lesquerella with improved harvest index. Journal of Plant Registrations. 7:339-344.

Interpretive Summary: Commercialization of new, alternative industrial crops requires improved varieties to meet market demands. Lesquerella is a new, alternative crop with unique seed oil that can be used to supply lubricating oils, engine oils, waxes, coatings, cosmetics, and other markets. A new lesquerella germplasm was developed through plant breeding to produce smaller plants with more seeds per unit area, a trait referred to as harvest index. This germplasm with improved harvest index should be valuable to famers and produces to improve seed yields with more efficient production requirements.

Technical Abstract: WCL-LO4-Gail lesquerella (Physaria fendleri L.) germplasm line was publicly released jointly by the USDA, Agricultural Research Service and the University of Arizona, in 2012 as part of the new crops breeding program. The germplasm was developed by mass selection originating from lesquerella germplasmWCL-LO3. The germplasm has an average oil content of 29 %, and 44 % lesquerolic acid. It has a harvest index of 16.5, plant biomass of 157 g, and seed yield of 23.5 g/plt. The unique characteristic of this germplasm is its demonstrated improved harvest index. The release of WCL-LO4-Gail will benefit public and private breeders with new germplasm for variety development. It will also benefit growers and producers with the highest yielding available germplasm for production.