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PIGMENT SYSTEM OF TRITICUM DIСOCCUM BY APPLICATION OF PRIMA FORTE 195 HERBICIDE AND WUXAL BIO VITA PLANT GROWTH REGULATOR

Author(s) Karpenko V.P., Doctor of Agricultural Sciences, Professor, Vice-Rector for Research and Innovative Activity, Uman National University of Horticulture, Ukraine
Pavlyshyn S. V. , , , Uman National University of Horticulture
Category Plant physiology
year 2018 issue №1, 2018
pages 100-103 index UDK 612.015.4:633.11:632.954:631.811.98
DOI 10.31395/2310-0478-2018-1-100-103 (Link)
Abstract Results of a vegetative experiment concerning formation of pigment system of Triticum dicoccum of Golikovska variety depending on the effect of various norms of Prima Forte 195 herbicide and methods of using Wuxal BIO Vita plant growth regulator were given. It was established an advantage regarding complex application of herbicide and plant growth regulator in view of the positive tendency in the formation of chlorophylls a and b content, their sum and ratio in the leaves of plants. In the course of the research, it was proved that combined application of Prima Forte 195 herbicide in the norms of 0.5; 0.6 and 0.7 L/ha with Wuxal BIO Vita plant growth regulator in the norm of 1.0 L/ha after pre-sowing seed treatment with the same growth regulator in the norm of 1.0 L/t showed a positive effect on metabolic processes in plants which was accompanied by the activation of synthesis of chlorophylls a and b, and in general, provided an increase in their sum in the leaves of Triticum dicoccum. There was found that the highest content of chlorophyll in the leaves was due to the use of the Prima Forte 195 herbicide in combination with the Wuxal BIO Vita treated before seeding the plant growth regulator. So, this tank mix provided an increase of: 1) chlorophyll a content in the leaves compared to a control of 0.22; 0.16 and 0.07 mg/g of raw substances in accordance (norms of herbicide is 0,5; 0.6 and 0.7 liter/hectare); 2) chlorophyll b (norms of herbicide is 0.5 and 0.6 liter/hectare) of 0.13 and 0.04 mg/g of raw substance; 3) in the norm of 0,7 liter/hectare chlorophyll b content was reduced to 0,02 mg/g of raw substance. The sum of chlorophylls in these variants of the experiment increased to 0.35; 0,20 and 0,05 mg/g of raw substance, respectively. Reducing of the chlorophyll content in the leaves of Triticum dicoccum with increasing of herbicide norms, obviously, is a direct effect of the herbicidal agent on inhibition of key physiological and biochemical reactions of the pigment complex of chloroplasts. Herbicides as a physiologically active substances can accumulate with chloroplasts, that, in turn, causes deep infractions both in synthetic processes and in key reactions of photosynthesis
Key words chlorophyll a and b, sum of chlorophylls a and b, herbicide, plant growth regulator, Triticum dicoccum
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