The effect of growing sites on grain quality of oats and pasting properties of oatmeals

Abstract

To assess the effect of growing sites on oat quality, 8 varieties were grown at 13 sites in New South Wales, Australia, in the 1995–96 and 1996–97 growing seasons. Grain milling quality, chemical composition, and pasting properties differed significantly between sites and were related to both variety and growing conditions. Varieties were the main determining factor of kernel size, kernel weight, and oil concentration, whereas growing conditions accounted for most of the variance in groat percentage and protein concentration. Breeding and selection offer opportunities for improving oat quality, and selecting suitable sites to grow oats could greatly improve milling quality and pasting properties, and ensure appropriate chemical composition.

The agronomic performance and nutritional content of oat and barley varieties grown in a northern maritime environment depends on variety and growing conditions

“…The macronutrient composition of oat and barley grains produced in Orkney between 2012 and 2014 are summarised in Table 2 and are similar to previously reported values (Peterson et al, 1975;Saastamoinen et al, 1992;Zhou et al, 1999;Andersson et al, 2008;Doehlert et al, 2013). There were significant differences between barley varieties for all macronutrients tested (p < 0.05).…”

“…The negative correlation between yield and protein was linked to the finding that the highest yielding varieties were those with a high starch and low protein content (Waggon and Concerto) while the lowest yielding varieties tended to be those with low starch and high protein content (Bere and Kannas). Previous studies have shown TKW to be both positively and negatively associated with b-glucan (Zhou et al, 1999;Andersson and B€ orjesdotter, 2011), but no significant correlation was found in the Orkney trial for either oats or barley. Although the design of the trials did not allow a statistical comparison of oats and barley, averaged over varieties and years the concentrations of fats and sugar were higher in oats, while NDF and starch were higher in barley.…”

“…Significant differences are highlighted in bold; Abbreviations: Berwick, Berwick-upon-Tweed. sites, variety and agronomic factors (Zhou et al, 1999;Doehlert et al, 2013;Redaelli et al, 2013;Sikora et al, 2013). It is possible that the environmental differences between the sites in this study may not have been diverse enough to result in larger differences in nutrient content.…”

“…The environment in which cereals are grown is known to affect their nutritional composition, and studies have found differences in the protein, fat and b-glucan content of oats and barley grown in different environments (Zhou et al, 1999;Redaelli et al, 2013). There are no detailed reports on the composition of oats and barley grown in hyper-oceanic climates like Orkney's.…”

A regulator of early flowering in barley (Hordeum vulgare L.)

“…Flour pasting properties are important quality traits and have close relationship with malting quality [ 83 , 64 ] and food processing quality [ 65 ]. Pasting properties have been found to be influenced by genotype [ 83 , 84 ] and environment [ 65 , 84 – 86 ]. Earliness per se can also influence grain protein content [ 49 ] thus pasting properties [ 87 ].…”