biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 30:285-293, 1988 | DOI: 10.1007/BF02878210

Comparative study of growth and carbon uptake inFagus sylvatica L. trees growing under different light conditions

Elena MasarovičovÁ1
1 Institute of Experimental Biology and Ecology of the Slovak Academy of Sciences, Bratislava, Czechoslovakia

Growth, carbon uptake and carbon utilization in leaves of various growing phase shoots (GPS) on beech trees(Fagus sylvatica L.) growing under different light conditions were compared. The values of photosynthetic capacity (maximum daily net photosynthetic rate, Pn max) were used as comparable parameters.
Daily time and irradiance (I, PhAR), when PN max was attained, were investigated similarly. Statistically significant differences were found in growth, Pn max and SLM (specific leaf mass) between different GPS and within the same stand, as well as within the same GPS and different stands. Pn max and SLM increased in the leaves of GPS I (spring - plagiotropic shoots) on trees from a sun stand from May till September. At the end of the growing season, the spring leaves exhibited, in comparison with the summer ones, intensive senescence, but leaves of the GPS II and III (summer -orthotropic shoots) evidently attained higher values of Px max and SLM at higher I (PhAR).
The correlation of growth, PN max and SLM in relation to environmental conditions, as well as the importance of transport, distribution and utilization of assimilates for annual carbon gain and biomass production are discussed in detail.

Received: October 13, 1987; Accepted: November 12, 1987; Published: July 1, 1988  Show citation

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MasarovičovÁ, E. (1988). Comparative study of growth and carbon uptake inFagus sylvatica L. trees growing under different light conditions. Biologia plantarum, 30(4), 285-293. doi: 10.1007/BF02878210
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