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Fiziol. rast. genet. 2017, vol. 49, no. 3, 248-255, doi: https://doi.org/10.15407/frg2017.03.248

INFLUENCE OF PLANTS TREATMENT BY COMPLEX OF MICROELEMENTS CARBOXYLATES ON PHOTOSYNTHETIC PARAMETERS AND YIELD OF WINTER WHEAT

Kapitanska O.S., Priadkina G.O., Stasik O.O.

  • Institute of Plant Physiology and Genetics, National Academy of Sciences of Ukraine 31/17 Vasylkivska St., Kyiv, 03022, Ukraine

The effects of microelements complex chelated by carboxylic acids on the chlorophyll content in leaves, leaves area index and chlorophyll index of high-yielding winter wheat crops at the stage of milky-wax ripeness, and yield were studied in the field experiments. The high correlation coefficient between yield and chlorophyll index of crops at the stage of milky-wax ripeness (r = 0,96±0,08) evidenced that the maintenance of crops photosynthetic apparatus activity during the later stages of ontogeny contributed to increasing grain productivity. The positive effect of micronutrient complex treatments on yield was established: the average yield increase for 4 varieties studied under different weather conditions was 6.5 % relative to control. Therewith, the yield gains by 0,55—0,80 t/ha were obtained for most varieties at relatively high values of crop yields (8,5—11,2 t/ha).

Keywords: Triticum aestivum L., chelated micronutrient, photosynthetic pigments, activity of photosynthetic apparatus, yield

Fiziol. rast. genet.
2017, vol. 49, no. 3, 248-255

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