Abstract
The article presents data on the study of Centaurea jacea L. (Asteraceae) seed productivity in the Ukrainian Carpathians and significant impact of insects-agents of biological control on it. The negative factor that affects the reduction of seeds number in the capitulum is anthropogenic one — mowing down, trampling down (recreation, grazing). The stronger factor is zoogenic one — the impact of insects-consorts so called agents of biological control. The agents of biological control are the living organisms which in the process of coevolution established such trophic ties as a result of which bring the considerable damage to the specimen-determinant affecting the number of its population. The researches indicate that the dynamics of SP in different years depends not only on the biological species characteristics, phytocoenotic conditions but also to a great extent on the biogenic factors which are both positive and negative. On the one hand the processes of pollination and blossom dust sprouting as well as fertilization and seminal primordial into the seeds depend on the number of insects-pollinators. On the other hand injurious insects, the agents of the biological control eat seed buds and tubular flowers in the capitulums of C. jacea reducing SP. The basic function of the biocontrol agents is that they are the natural regulators of the abundance of the given species.
Highlights
ВПЛИВ ЗАСОБІВ БІОЛОГІЧНОГО КОНТРОЛЮ НА НАСІННЄВУ ПРОДУКТИВНІСТЬ ВОЛОШКИ ЛУЧНОЇDosayagnennya ta problemi introdukczii roslin v Stepovoy soni Ukraini [Achievements and challenges plant introduction in the steppe zone of Ukraine].
Soderchzanie phenolnich soedineniy i phlavonoidov v listayach i pobegach Zizyphus jujuba Mill.
[The content of flavonoids and phenolic compounds in the leaves and shoots of Zizyphus jujuba Mill.].
Summary
Dosayagnennya ta problemi introdukczii roslin v Stepovoy soni Ukraini [Achievements and challenges plant introduction in the steppe zone of Ukraine]. Soderchzanie phenolnich soedineniy i phlavonoidov v listayach i pobegach Zizyphus jujuba Mill. [The content of flavonoids and phenolic compounds in the leaves and shoots of Zizyphus jujuba Mill.]. 9. Karnatovskaya M.Yu., Paliy A.E., Grebennikova O.A. — perspektivniy istochnik biologicheski aktivnich vechzestv [Ziziphus jujuba Mill. — promising source of biologically active substances]. Proceedings of the Biologicheski aktivnie vechzestva rastrniy — izuchenie i ispolsovanie [Biologically active substances of plants — study and use]. ВПЛИВ ЗАСОБІВ БІОЛОГІЧНОГО КОНТРОЛЮ НА НАСІННЄВУ ПРОДУКТИВНІСТЬ ВОЛОШКИ ЛУЧНОЇ (CENTAUREA JACEA L.)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
