Comparative Characteristics of Growth and Photosynthesis of Sun and Shade Leaves from Normal and Pendulum Walnut (Juglans regia L.) Trees |
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| Authors: | Atanasova L Stefanov D Yordanov I Kornova K Kavardzikov L |
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| Institution: | (1) Institute of Plant Physiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;(2) Institute of Pomology, 4000 Plovdiv, Bulgaria |
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| Abstract: | Pendulum walnut leaves exhibited various adaptive responses related to the regulation of photon interception such as specific
downward orientation, greater leaf area, and larger pigment pool. Changes in the regulation of PS2 such as higher thermal
dissipation (NPQ) and lower quantum efficiency (ΦPS2) that protect the photosynthetic apparatus against damages were also found. The growth and photosynthetic features of pendulum
walnut leaf are interpreted as adaptations that allow the pendulum walnut tree to compensate the impaired ability by appropriate
growth to ensure the energy needs for photosynthesis, respectively for biomass formation.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | carotenoids chlorophyll a fluorescence growth habit leaf dimensions oxidative index pigments |
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