ECOLOGICAL AND GENETIC VARIABILITY OF PIGMENT CONTENT IN THE LEAVES OF SOYBEAN VARIETIES OF THE NORTHERN ECOTYPE
2019
Golovina, E.V.
In 2016-2018 years with contrasting weather conditions on 7 varieties and 2 lines of soya developed by VNIIZBK the influence of meteorological conditions on the content and ratio of photosynthetic pigments in the leaves was studied in connection with resistance to the conditions of the Central Black Earth region of the Russian Federation. At the average for 3 years maximal content of chlorophyll a was observed for varieties Mezenka, Svapa, Shatilovskaya 17 (7,16-7,39 mg/g of dry substance); chlorophyll b – for Zusha, Mezenka, Svapa (4,63-4,65 mg/g of dry substance); carotenoids –for Shatilovskaya 17, Svapa, Krasivaya Mecha (1,77-2,24 mg/g of dry substance). By the amount of chlorophylls stood out Mezenka and Svapa (11,76-11,79 mg/g of dry substance). Identified adaptive reactions of the pigment apparatus of soybean varieties. In adverse conditions of insufficient insolation of excessively wet and cold in 2017 increased the number of chlorophyll a and carotenoids, and in the warmest 2018 year with excess sunlight, the content of chlorophyll b increased. There is a close correlation between the content of various forms of chlorophyll at the level r=0,7-0,9. Changes in the level of accumulation of chlorophylls and carotenoids under the influence of meteorological factors can be considered as adaptive reactions aimed at increasing the stability of the photosynthetic apparatus in the conditions of the Central Chernozem Region of the Russian Federation.
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