Fiziol. rast. genet. 2016, vol. 48, no. 6, 530-537, doi:

Relationship between parameters of photosynthetic apparatus activity and yield of winter wheat under chelated microfertilizers treatment

Kapitanska O.S., Priadkina G.O., Stasik O.O., Huralchuk Zh.Z.

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

Parameters characterizing the formation of primary production of winter wheat plants in cenosis — the aboveground dry matter accumulation and net productivity of photosynthesis — were studied during the reproductive period of the growing season. The study was conducted in field and small plot experiments with plants of 3 common winter wheat varieties treated with chelated microelements complexes Avatar-1, Nanomix and Brexil Mix and without such treatment. It is shown that the effect of these complexes on both studied photosynthetic apparatus activity parameters depended on the phase of development, weather conditions, and variety. The treatment with microelements complexes increased the dry matter mass in the aboveground part of the plants in the phase of milky ripeness and the net productivity of canopy photosynthesis during the period milky—milky-wax ripeness in semidwarf variety Smuhlyanka. The positive impact of an increase of the canopy photosynthetic apparatus activity during the reproductive period on the yield have been proved by a close correlation between yield and aboveground plant biomass at the phase of milky ripeness (0,70±0,16), and net productivity of canopy photosynthesis during periods of flowering—milky ripeness and milky—milky-wax ripeness (0,64±0,18 and 0,80±0,13).

Keywords: Triticum aestivum L., chelated microelements, photosynthetic apparatus activity, net productivity of canopy photosynthesis, yield

Fiziol. rast. genet.
2016, vol. 48, no. 6, 530-537

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