Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal.2015. № 4(16). P. 8—14
03.00.00 BIOLOGICAL SCIENCES
UDC 581.524.2 (470.56)
Pikalova Ekaterina Vasilievna, Postgraduate student
Orenburg State Pedagogical University
ONTOGENETIC TACTICS OF Ambrosia trifida L. IN ORENBURG
Abstract
The article represents the results of studying ontogenesis of Ambrosia trifida L. in Orenburg. One can classify 3 periods and 6 age states. The paper defines the variation range of morphometric parameters for each stage of ontogenesis with the same coefficient of variation. Vegetative organs are characterized by low and very high level of variability, and generative organs are characterized by the increased level and the high level of variability. Besides, the author distinguishes and characterizes four ontogenetic tactics of variation of morphometric parameters of this species. They reflect individually physiological features that keep the species population in optimal state for the phytocenosis.
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