Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal.2017. № 1(21). P. 43—48
03.00.00 BIOLOGICAL SCIENCES
UDC 581.524.2 (470.56)
Pikalova Ekaterina Vasilievna, Candidate of Biological Sciences, Senior Lecturer
Orenburg State Pedagogical University
SEED PRODUCTIVITY OF Ambrosia trifida L. IN ORENBURG CIS-URALS
Abstract
The article gives the results of studying reproductive indicators of aggressive invasive species of Ambrosia trifida L. This species is a quarantine weed in the territory of the Orenburg region, capable of successful spread over new territories and formation of powerful seed bank in the soil. It is established, that the indicators of seed productivity depend on weather conditions of each specific season under study, including temperatures and precipitation, as well as on growth conditions. The coenopopulations, growing on nitrogen-rich soils, show higher reproductive indicators than the ones, growing on compacted soils in the zone of high anthropogenic impact. The paper presents the calculation results of reproductive effort and assessment of external morphological diversity of Ambrosia trifida L. seeds.
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