Наследственная обусловленность видоспецифичности тополей по содержанию крахмала в тканях побегов

Abstract

We studied the hereditary conditionality of species specificity of 8 poplar species by the starch content in the tissues of their shoots. The objects of research were: white pyramidal poplar: (P. alba L., f. piramidalis); black poplar (P. nigra L.); Italic poplar (P. nigra, var. italica Münchh.); Chinese poplar (P. Simonii Carr.); balsamic poplar (P. balsamifera L.); poplar larrity (P. laurifolia Ledeb.); white poplar (P. alba L.); aspen (P. tremula L.). Starch concentration in various tissues of annual shoots were established during microscopic studies with histochemical staining of preparations. Statistical processing of the actual material was performed using one-way and two-way anova. It was found that the types of poplars differed in the presence of starch in different tissues. The white pyramidal poplar and its typical shape showed similarities in its content. Aspen differed from them in a somewhat large amount of this substance. The species included in one section were more similar to each other, with a noticeable difference from the representatives of other sections. The difference in ratings between sections of black and balsamic poplars is less noticeable than between each of these sections and white poplars. The influence of the genotype on the formation of physiological differences reaches 72 %. Differences between accounting trees of the same species are less pronounced than between the taxonomic groups compared, and do not reach the level of significant ones. The species specificity of poplars growing in the Nizhny Novgorod region, according to the physiological characteristics associated with the starch content in the tissues of their shoots, is hereditary.