DISTRIBUTION AND BIOLOGY OF <i>LUPINUS POLYPHYLLUS </i>LINDL. (FABACEAE) IN REPUBLIC OF BASHKORTOSTAN

Abstract

The distribution, morphometric and population characteristics of the invasive species Lupinus polyphyllus Lindl. in Republic of Bashkortostan were analyzed. Twenty five localities of the species were identified and 11 invasive populations were examined in 5 districts of the republic. It has been shown that the main vector of L. polyphyllus invasion is the drift of the species from horticultural crops, and spontaneous species dispersal along the roads is less common. The density of L. polyphyllus plants in coenopopulations ranges from 4.3 to 14.5 ind./m<sup>2</sup>. The aboveground biomass of the species can reach 1 kg per 1 m<sup>2 </sup>or more. The proportion of the species in the community ranges from 55.1 to 88.8%; the species dominates in most communities. When introduced into meadow phytocenoses, it forms a derivative community of Lupinus polyphyllus [ Arrhenatheretalia elatioris ]. It has been established that the maximum values of the parameters are typical for populations growing in more favorable moisture conditions. The highest indicators of parameters were noted in the Bulat-Elga, Changakul coenopopulations, the minimum ones - in the Neftekamsk, Urazaevo coenopopulations. One generative shoot gives from 13 to 95 fruits and from 56 to 760 seeds, the total productivity of 1 plant reaches 4543 seeds. The vitality assessment has shown that four coenopopulations are prosperous, one coenopopulation is equilibrium, and six are depressed. An increase in the number of localities of L. polyphyllus in the Cis-Urals of Republic of Bashkortostan is predicted in the coming years.