COMPARATIVE MORPHOLOGICAL-ANATOMICAL STUDY OF THE STRUCTURES OF A STALK OF HYBRID DWARFNESS OF WHEAT

Abstract

As a result of complementation of dominant genes of hybrid dwarfness the depression of morphological, as well as anatomical parameters of a stalk arises. The type of hybrid Dwarf II is more depressed, which is expressed in sharp suppression of the growth of plants, reduction of the number and size of fibro-vascular bundles. It was found out that the reduction of the diameter of a stalk of a hybrid Dwarf II occurs at the expence of reduction of a hollow part, in this case the functioning surface does not decrease. The type of the hybrid dwarfness as Dwarf III varies to the part of reduction of a diameter of a stalk. The weak development of a mechanical ring is partially compensated by a large number of fibro-vascular bundles located in it. The parenchyma in both hybrids is well developed.