Selection of perspective morpho-types from Karelian population of local Olonets breed of Phleum pratense L

A comparative assessment of selected morphotypes of P. pretense singled out from Karelian population of local Olonets breed is presented. The reproductive progeny from tall-growing and foliate samples of the cattail grass (Phleum pratense) is distinguished by the dissimilarity of morphometric indices. The variability of values in the length, stem number, and vegetative mass of the single plant ranged from 9,0% up to 53,3%. The stem length is the most significant factor responsible for the effectiveness of individual selection. Morphotypes with 115,7 to 151,9 om in the stem length (with the probability of about 95 %) occurred rather frequently. Their reproductive progeny had the stem length of 125,7 to 180,3 сш. The study of P. pretense helped to select 330 perspective morphotypes. In case of their further multiplication they might be used in the long-term grasses and legumes’ compositions to form longstanding phytocenosis on the regional level.