Submitted to: Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting
Publication Type: Abstract Only
Publication Acceptance Date: August 11, 2004
Publication Date: October 4, 2004
Citation: Hang, A., Satterfield, K.L., Burton, C.S. 2004. CD-ROM. Beta-glucan and starch levels in hulless barley lines grown at two locations in idaho. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. no reference number Technical Abstract: Beta-glucan and amylose are important components of barley grain. However, limited information is available as to the effect of factors such as test weight, seed plumpness, field location and seasonal variation on levels of beta-glucan and amylose. Replicated field plots of twenty diverse barley cultivars and advanced lines grown in 2002 and 2003 under irrigation at Aberdeen, Idaho, and on dryland at Tetonia, Idaho, were evaluated to determine the impact of those factors. Test weight, seed plumpness, beta-glucan concentration and amylose/amylopectin concentrations were measured for seed samples from all plots. Statistical analysis of variance using the SAS program was conducted on the collected data. Beta-glucan concentrations, which ranged from 4.2 % to 6.5%, were affected by genotype and by location x year interactions, but not by test weight or seed plumpness. Amylose starch differed significantly by genotype and ranged from 8.1% to 27.9%, but was not affected by test weight, seed plumpness or environmental factors. Results also indicated that an inverse relationship exists between amylose and beta-glucan levels. Although test weight and seed plumpness appear to have little or no effect on beta-glucan and amylose starch, the effect of environmental variation needs to be studied further to clarify the influence of environment on beta-glucan in barley grains.