Frantijchuk V. The role of carbon-nitrogen balance in the regulation of longevity of photosynthetic apparatus in winter wheat plants

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0417U000579

Thesis Registration Form

0417U000579.pdf

Applicant for

Specialization

  • 03.00.12 - Фізіологія рослин

09-03-2017

Specialized Academic Board

Д 26.212.01

Insninute of plant physiology and genetics

Essay

This research focuses on the participation of carbon-nitrogen balance in regulation of the leaf photosynthetic apparatus longevity in modern high-yielding varieties of winter wheat. The ontogenetic changes in structural and functional parameters of photosynthetic apparatus of plants of winter wheat at the reproductive period of development were studied. It is found that the increase in concentration of sugars in the flag leaf induces final leaf aging process depending on the nitrogen content. It is shown that increasing concentrations of soluble carbohydrates as a result of blocking the outflow of assimilates from the leaf induces the senescence process - reduction of photosynthetic activity and destruction of the photosynthetic apparatus, which develop faster lower nitrogen supply.

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