Dynamics of change of chlorophyll and carotenoid pigments in leaves of Chrozophora tinctoria species spread in Nakhchivan Autonomous Republic (Azerbaijan Republic)

Abstract

<p class="abstract"><strong>Background:</strong> The pigment composition and the dynamics of pigment accumulation were investigated to determine the degree of adaptation of <em>Chrozophora tinctoria </em>to the environmental conditions in the Nakhchivan Autonomous Republic (AR) of Azerbaijan Republic.</p><p class="abstract"><strong>Methods:</strong> The leaves were collected (transects size 5×5 m, in triplicate) and dried with 15-20 pieces, pigments were separated by solvent. The pigment density was determined by the absorption peak on a spectrophotometer, and then the pigment density was calculated. </p><p class="abstract"><strong>Results:</strong> The chlorophyll pigments in the dry weight of leaves varied between 2-6 mg and carotenoids 0.8-1.2 mg/g were found. Also, chlorophyll (a-b) pigments increased in 1.2 times, and carotenoids decreased in 3.6 times depending on environmental conditions.</p><p class="abstract"><strong>Conclusions:</strong> Photosynthetic apparatus of the species actives in all cenosis with response adaptive to changing of environmental conditions depends from the time of leaf collection for the <em>Chrozophora tinctoria </em>species as shown results of researches.</p>