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Detailed composition analyses of diverse oat genotype kernels grown in different environments in North Dakota.

Doehlert, Douglas C., Simsek, Senay, Thavarajah, Dil, Thavarajah, Pushparajah, Ohm, Jae-Bom
Cereal Chemistry 2013 v.90 no.6 pp. 572
Avena sativa, analysis of variance, ash content, asparagine, beta-glucans, calcium, carbohydrate content, databases, flour, free amino acids, genotype, genotype-environment interaction, insoluble fiber, iron, lipid content, long chain fatty acids, lysine, magnesium, methionine, neutral detergent fiber, nutrient content, oats, potassium, protein content, seeds, selenium, soluble fiber, starch, zinc, North Dakota
Nutritional composition of oat kernels from 18 genotypes grown in 6 environments in North Dakota (USA) was analyzed by chemical means. Of the macro-nutrients, mean starch concentration was 56.5%, protein was 18.1%, oil was 7.9%, neutral detergent fiber (insoluble fiber) was 6.0%, beta-glucan (soluble fiber) was 5.2%, ash was 1.9%, and soluble carbohydrate was 0.6%. These add up to 96.2%, which appear to account for most of the mass of the oat kernel. Protein amino acid analysis indicated 4.5% lysine and a.8% methionine. Free amino acid analysis indicated 1130 micrograms/g flour asparagine. The 18:1 and 18:2 fatty acids were the most abundant in oat lipids. Mean micro-nutrient concentrations in oat kernels included potassium (3419 ppm), magnesium (1416 ppm), calcium (441 ppm), iron (52 ppm), zinc (26 ppm), and selenium (0.38 ppm). Analysis of variance indicated significant genotypic and environmental variation, as well as significant genotype by environmental interaction for most of the nutritional components. In general, protein was higher in drier hotter environments, whereas oil and beta-glucan, and starch were higher in wetter, cooler environments. The results provide a unique data base of a collection of compositional components for specific oat genotypes in diverse environments.