| Abstrakt: |
The content of plastid pigments is an indicator of the reaction of plants to environmental changes and their adaptation to environmental conditions. In the case of damage caused by insect pests, the plants develop some compensatory and adaptive mechanisms to reduce the negative impact. In the present study, an analysis of the dependence of the content of plastid pigments and the relationship between them of the variety, the age of the plants and the damage on the root system of the alfalfa longhorn beetle larvae was performed. It has been found that the content of pigments (chlorophyll a, chlorophyll b, carotenoids) in the alfalfa leaf has been influenced by the age of the plants, with the overall pigment content decreasing with the aging of the crops. The variety („Pleven 6", „Prista 3", „Mnogolistna 1") did not have a significant effect on the content of chlorophylls and carotenoids nor on the ratio between them. An increased content of plastid pigments in plants with an alfalfa damaged root system in relation to healthy plants has been reported, which may be due to the alfalfa compensation mechanism, in the case of attack by pests. [ABSTRACT FROM AUTHOR] |
