Effect of Genotype and Environment on Food-Related Traits of Organic Winter Naked Barleys

Abstract

This study aimed to understand how genetics and environment influence organic winter naked barley composition and functionality, and to identify traits that might effectively categorize basic physicochemical functionality of food barley. Across three years, two locations, and 15 genotypes, genotype significantly influenced all 10 food-related traits and was the dominant influence for three. Location significantly influenced eight traits and was dominant for three. Year significantly influenced all traits but was dominant only for one. Of the interactions location * year was the most influential and was the dominant effect for two traits. For all interaction terms where genotype was a component, the effect sizes were either small or non-significant suggesting that even with low leverage traits there is the potential for genetic gain by observing trait rankings across environments. Principal component analysis identified six traits that could serve to categorize basic physicochemical functionality of food barley. These were grain protein content, beta-glucan content, flour-water batter flow, water solvent retention capacity, time to peak viscosity of cooked flour, and hardness of cooked intact grains.

Effects of roasting and steeping on nutrients and physiochemical compounds in organically grown naked barley teas

“…Recognizing that statistical comparisons are not possible due to a lack of replication, there are notable differences between varieties in terms of total carbohydrates, total proteins, calcium, potassium, and sodium. Organic naked barley grain composition is known to be influenced by genotype, location, crop year, and crop year/location interactions ( Bunting et al, 2022 ). Because we used commercial varieties that were grown in different locations and in different seasons (fall vs spring-planted), we cannot determine if these nutritional differences are due to genotypic, environmental, or interaction effects.…”

Genotype × environment interactions of organic winter naked barley for agronomic, disease, and grain quality traits

“…All previous lines have been selected under conventional growing conditions. Specific food quality traits of the OR and NY trials are characterized by Bunting et al (2022).…”

“…Genotypes evaluated in NY that had high PHS included 10_0655, 10_0662, DH140490, and DH140394. To test for food quality, Bunting et al (2022) ran a preliminary Rapid Visco Analyzer test (RVA) for this trial grown in the NY and OR environments to evaluate samples for PHS before analyzing for food quality. They found that genotypes 10_0662, 10_0655, DH140490, and DH140394 had indications of PHS, which was consistent with PHS scoring in NY.…”