Camelina Adaptation and Performance of Genotypes

1 Camelina: Adaptation and Performance of Genotypes Stephen O Guy*a, Donald J Wysockib, William F Schillingerc, Thomas G Chastaind, Russell S Karowd, Kim Garland-Campbelle, and Ian C Burkea 10 a Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164, 11 USA 12 b Department of Crop and Soil Science, Oregon State University, Columbia Basin Agricultural 13 Research Center, Pendleton, OR 97801, USA 14 c Department of Crop and Soil Sciences, Washington State University, Dryland Research 15 Station, Lind, WA 99341, USA 16 d Department of Crop and Soil Science, Oregon State University, Corvallis, OR 97331, USA 17 e USDA-ARS, Wheat Genetics, Quality, Physiology, and Disease Research Unit, Washington 18 State University, Pullman, WA 99164, USA 19 *Corresponding author Tel.: +1 509-335-5831: Fax +1 509-335-8674 E-mail address: 20 sguy@wsu.edu (S.O Guy) 21 Abstract 22 Camelina (Camelina sativa L Crantz) has shown potential as an alternative and biofuel 23 crop in cereal-based cropping systems Our study investigated the adaption, performance, and 24 yield stability among camelina genotypes across diverse US Pacific Northwest (PNW) 25 environments Seven named camelina genotypes and 11 experimental numbered genotypes were 26 evaluated for seed and oil yield in trials at 18 location/year environments that spanned four 27 annual precipitation zones Locations were rainfed with long-term mean annual precipitation 28 ranging from 242 to 1085 mm Thirteen trials were spring-planted and five were fall-planted 29 Oil content was determined on seed from seven trials, seed weight from five trials, plant height 30 and grain density from four trials, and plant lodging from two trials Yield stability index was 31 determined and related to seed yield across trials and within each of four annual precipitation 32 zones Seed yields varied from a trial mean of 127 kg/ha at Lind WA during a year of extreme 33 drought to 3302 kg/ha at Pullman WA with the grand mean 1213 kg/ha Seed yields among 34 genotypes were significantly different (P