Publication:

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

Background The pigment composition and the dynamics of pigment accumulation were investigated to determine the degree of adaptation of Chrozophora tinctoria to the environmental conditions in the Nakhchivan Autonomous Republic (AR) of Azerbaijan Republic.

Methods 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.

Results 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.

Conclusions 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 Chrozophora tinctoria species as shown results of researches.