ß-Glucan contents of groats of different oat cultivars in official variety, in organic cultivation, and in nitrogen fertilization trials in Finland

Abstract

ß-Glucan is a beneficial chemical compound in the diet of humans by decreasing the levels of serum cholesterol and blood glucose. The ß-glucan contents of oat groats were studied in official variety trials (1997-1999), nitrogen fertilization trials (1997-1999) and organic variety trials (1997-1998) in Finland. Eight cultivars were studied in the organic variety trials. Two of them, cultivars Puhti and Veli, were cultivated also with a conventional method at the same fields. The years 1997 and 1999 were very warm and dry and 1998 very cool and rainy. The effects of year and cultivar on ß-glucan content were significant in all three trial series. The Kolbu oat cultivar had a significantly lower ß- glucan content than other cultivars in all trials. N fertilization did not increase the ß-glucan contents of oats in Finland. The effect of cultivation method (traditional vr organic cultivation) had no significant effect on the ß-glucan content. The year x cultivar interaction significantly affected the ß-glucan contents of oat groats in N fertilization trials. The reaction of different cultivars to weather conditions was different. Kolbu oat cultivar had significantly lower ß-glucan contents in 1998 than in warm years in all three trial series.;

Changes Caused by Genotype and Environmental Conditions in Beta-Glucan Content of Spring Barley for Dietetically Beneficial Human Nutrition

“…A significant effect of genotype×environment interaction on β-glucan levels in oats was also confirmed by Saastamoinen et al [31] and these authors found small differences among oat cultivars (ca. 1%) and presumed this to be genetically controlled effects too.…”

Júpiter-INIA: A new oat variety with improved β-glucan and protein contents

“…Lower water availability positively affected β-glucan in Peterson (1991); however, the opposite occurred in Doehlert et al (2001). In some studies, N fertilization incremented the β-glucan and protein contents (Fan et al, 2009;Güler, 2011); whereas in others only there was a positive effect in protein content (Saastamoinen et al, 2004;Weightman et al, 2004). In this work, only there was effect of the environment in the protein content (result not shown).…”

Effects of genetic and agronomic factors on grain composition in oats

“…Weightman et al (2004) evidenced that increasing ammonium nitrate rates exert a positive effect on protein content but not on b-glucan concentration of winter oats. Saastamoinen et al (2004) reported no significant effects of traditional vs. organic cultivation on b-glucan accumulation. Genetic origin and, to a minor extent, soil fertility, were found to have a large impact on oat grain components (Brennan and Cleary 2005;Peterson et al 2005).…”