Issues:
Sections:
Issue 90
GENERAL BIOLOGY
UDK: 577.34; 577.12
STUDY OF FLUORESCENCE INDICATORS AND PIGMENT COMPOSITION OF HEDYSARUM DAGHESTANICUM RUPR. EX BOISS
PINYASKINA Elena Vladimirovna,
MAGOMEDOVA Aminat A.
Fluorescent studies of the narrowly local endemic of Daghestan Hedysarum daghestanicum Rupr. ex Boiss. have been carried out. Features of the functioning of the photosynthetic apparatus under conditions of intense abiotic load have been revealed, additional photosynthetic parameters have been calculated: the coefficient of maximum utilization of light energy (?), minimum saturating radiation (Ik), as well as indices and parameters of photoinhibition (Ib, beta). The analysis of the pigment composition shows the prevalence of Сhlorophyll a (Chl a) relative to Chl b by 3,2 times, the total ratio of Сhlorophylls (a + b) to Сarotenoids ~5,21. It has been shown that the Hedysarum daghestanicum plant maintains high photosynthetic activity due to the intensification of electron transport and minimization of losses (both regulated and unregulated). Comprehensive studies have shown the high adaptability of Hedysarum daghestanicum to abiotic factors: xero-mesophyte, growing in conditions of strong insolation and lack of moisture, has structural plasticity of photosystems and has a set of specific physiological adaptations to abiotic stress factors (strong insolation and lack of moisture), preventing destruction of cells or their organelles.
Pages: 23 - 30
Date: 08.05.2023