The effect of elevated CO2 concentrations on leaf carbohydrate, chlorophyll contents and photosynthesis in radish

• Autorzy: Urbonaviciute A , Samuoliene G. , Sakalauskaite J. , Duchovskis P. , Brazaityte A. , Siksnianiene J.B. , Ulinskaite R. , Sabajeviene G. , Baranauskis K.
• Języki publikacji: EN

Abstrakty

EN

The objective of this study was to evaluate the effect of different CO2 concentrations on carbohydrate, chlorophyll contents and net photosynthetic productivity in radish (Raphanus sativus L., cv. Zara) leaves. Plants were exposed to 350, 700, 1,500 and 3,000 ppm atmospheric CO2 concentrations over ten days. Day/ night temperature was 24°C/17°C and photoperiod was 16 h. Carbohydrate (fructose, glucose, sucrose and maltose) content analysis was performed using chromatographic methods. The content of chlorophyll was evaluated spectrophotometrically. The results showed that elevated CO2 increases total carbohydrate con­tent and changes in hexoses/sucrose ratio. A significant increase in chlorophyll content was only in 1,500 ppm treatment. Differences in photosynthetic productivity rate were within error margins. There was no ef­fect on carbohydrate and chlorophyll contents in radish leaves seven days after returning plants to ambient CO2, though higher photosynthetic productivity rate was in radish, previously grown under 700 ppm CO2. In summary, leaf carbohydrate contents affect the intensity of photosynthetic pigment synthesis.

Słowa kluczowe

EN

carbon dioxide; chlorophyll content; plant acclimatization; radish; leaf; carbohydrate; environment condition; photosynthesis; productivity

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2006
• Tom: 15
• Numer: 6
• Opis fizyczny: p.921-925,fig.,ref.

Twórcy

autor

Urbonaviciute A

• Lithuanian Institute of Horticulture, Lt-54333 Babtai, Kaunas district, Lithuania

autor

Samuoliene G.

autor

Sakalauskaite J.

autor

Duchovskis P.

autor

Brazaityte A.

autor

Siksnianiene J.B.

autor

Ulinskaite R.

autor

Sabajeviene G.

autor

Baranauskis K.

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