Morphological features of rye grain with low pentosan content

Background. The grain coat plays a major role in the development of rye cultivars with low levels water-soluble pentosans (WSP). Grain thinness is diagnostic trait for WSP (arabinoxylans) content. To improve technology low-pentosan breeding, it becomes important to study effect changes anatomy grains on morphological characteristics. Materials and methods. Grains thin coats (transparent) were identified LFS-1 diaphanoscope populations 7 commercial winter grown Russian Federation. Anatomical features seed studied thick- thin-coated ‘Era’ ‘Vyatka’. thickness aleurone layer assessed according L. N. Lyubarsky. Results conclusions. In grains, we found reduction pericarp by 50–70% 32.1–39.6%, compared thick-coated grains. With constant cell size “transparent” decrease occurs at expense not only walls, but also intercellular space. tissues second multicellular contains bulk protective biologically passive WSP. It was proved that there no significant parameters, such as length, width relative volume, depending thinness. Significant differences 1000 weight. index increased 5.2–19.7%, “nontransparent” ones.