CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS
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CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS |
RUSSIAN ACADEMY OF SCIENCES |
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Zagirova S.V. Structure, pigment content and photosynthesis of Siberian larch needles in Northern and Sub-Arctic Urals // Forest Science (Lesovedenie). 2014. No 3. С.3-10. Structure and functional organization of photosynthetic apparatus of siberian larch growing on the western slope of Northern and Sub-Arctic Urals were studied. The needle morphostructure, the mesophyll cell ultrastructure and the pigment complex of chloroplasts were quantitatively characterized. Active photosynthesis of larch was observed during warm days with low air water deficit. Photoassimilation depression under hot and dry weather was followed by decrease in stomatal conductance of needles. Under extreme conditions of mountains siberian larch has low photosynthesis. It decreased gradually from Nothern to Sub-Arctic Urals. Northern and Sub-Arctic Urals, siberian larch, needle, structure, pigment, photosynthesis.. |
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