Features of stomatal conductance of СО2 of Fagopyrum esculentum Moench leaves
DOI:
https://doi.org/10.28983/asj.y2019i3pp4-8Keywords:
kind, buckwheat, leaves, stomatal conductivity of CO2, ontogenesis, iered variability, day course, insolation, the rate of photosynthesisAbstract
In the conditions of field and vegetation experiments on intact plants, the specific features of stomatal conductivity of CO2 of Fagopyrum esculentum Moench leaves were studied for the first time. It is shown that its value significantly depends on the growth phase, the location of leaves on the plant, daytime and environmental conditions. The most active diffusion of carbon dioxide molecules through the stomata is carried out during the period of mass flowering, formation and filling of fruits in the leaves of the upper tiers in the afternoon – from 13 to 16 hours. Dry conditions adversely affect the state of the process, and increased insolation, on the contrary, is positive. The first is due to the need to protect plants from dehydration in dry and hot weather, and the second – the creation of the most favorable conditions for the realization of the potential of photosynthesis in conditions of increased insolation. As a result, it was concluded that stomatal conductivity of leaves plays an important role in carbohydrate metabolism of buckwheat plants, having a positive effect not only on the intensity of transpiration, but also photosynthesis.
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