Using X-Ray Image Analysis to Assess the Viability of Northern Red Oak Acorns: Implications for Seed Handlers

Abstract

This paper discusses the potential to use X-ray image analysis as a rapid and nondestructive test of viability of northern red oak (Quercus rubra L.) acorns and the methodology to do so. Acorns are sensitive to desiccation and lose viability as moisture content (MC) decreases, so we examined X-ray images for cotyledon damage in dried acorns to predict seed viability and early seedling growth. When compared to greenhouse growth measurements, the X-ray image analysis proved to be related to seed germination and early seedling growth, even more so than MC. These results suggest that X-ray image analysis may provide a more accurate test for acorn viability than other popular tests. This paper describes how to bring this proposed seed test into practice with the hope of improving nursery efficiency and quality of oak seedlings.

Parent Publication

• National Proceedings: Forest and Conservation Nursery Associations-2005

Citation

Goodman, Rosa C.; Jacobs, Douglass F.; Karrfalt, Robert P. 2006. Using X-Ray Image Analysis to Assess the Viability of Northern Red Oak Acorns: Implications for Seed Handlers. In: Riley, L.E.; Dumroese, R.K.; Landis, T.D., tech. coords. 2006. National Proceedings: Forest and Conservation Nursery Associations - 2005. Proc. RMRS-P-43. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 143-146