Features of photosynthetic activity of sunflower hybrids (Helianthus annuus L.) (F1) depending on the effect of a plant growth regulator under the conditions of the southern Steppe of Ukraine
Journal Title: «Таврійський науковий вісник» - Year 2017, Vol 98, Issue
Abstract
The results of the research on the influence of the AKM plant growth regulator on the photosynthetic activity of sunflower hybrids under the conditions of insufficient humidification of the Southern Steppe of Ukraine are presented. It has been established that pre-sowing treatment of sunflower seeds with the plant growth regulator causes an increase in the area of the leaf surface by 19 %. Over the years of research, the leaves of control plants of hybrid Perseus in the flowering phase contained an average of 8.98 mg / g of dry matter of chlorophylls, which is 31% more than in Alpha and Logos hybrids. It was found that the maximum effect on the index of pigments (Hl./car.) was produced by factor A (58.8 %), while the influence of factors B and C was 1.2 and 1.8%, respectively. In addition, the interaction of factors A and C (24.0 %) was also strong. The AKM plant growth regulator increases the resistance of sunflower plants to abiotic stresses and increases the yield by an average of 31.8 % compared with the control.
Authors and Affiliations
О. А. Єременко
Keywords
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