Transactions of KarRC RAS :: Scientific publications
Transactions of KarRC RAS :: Scientific publications

Transactions of KarRC RAS :: Scientific publications
Karelian Research Centre of RAS
ISSN (print): 1997-3217
ISSN (online): 2312-4504
Transactions of KarRC RAS :: Scientific publications
Background Editorial committee Editorial Office Statute For authors For reviewer Russian version
Transactions of KarRC RAS :: Scientific publications

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SCIENTIFIC PUBLICATIONS
Н.М. Казнина, Ю.В. Батова, Г.Ф. Лайдинен, А.Ф. Титов.
Влияние кратковременного снижения температуры на водный обмен пшеницы в условиях оптимального и избыточного содержания цинка
N.M. Kaznina, Yu.V. Batova, G.F. Laidinen, A.F. Titov. The effect of short-term chilling on the water metabolism in wheat as related to optimal and excessive zinc content // Transactions of Karelian Research Centre of Russian Academy of Science. No 6. Experimental biology. 2018. Pp. 103-108
Keywords: Triticum aestivum L.; zinc; low temperature; fresh and dry biomass; water content; stomatal conductance; transpiration
The effect of short-term chilling (to 4°С for 1 day) on the growth and water metabolism in winter wheat (Triticum aestivum L.) when combined with optimal (2 ハM) and excessive (1000 ハM) zinc content in the root area was studied in a controlled environment. In the plants growing in a medium with optimal zinc content a 1 day exposure to the 4°С temperature caused a reduction of the stomatal pore size, a decline in stomatal conductance and transpiration rate. These modifications supposedly act as defensive adaptations meant to maintain a high water content in the leaves and support the increment of the above-ground biomass. Where the metal concentration in the root area was excessive, there was a heavier decline in stomatal conductance and transpiration rate, and yet the water content in the leaves somewhat decreased. Furthermore, plants in this treatment demonstrated a partial closure of stomata and a considerable decrease in their number. The above changes in the stomatal system together with a slower increment of the root biomass pointing to inhibition of their growth must have been the main reasons for a disruption of the water metabolism in the wheat plants exposed to a low temperature coupled with excessise zinc content in the root area.
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  Last modified: June 26, 2018