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Seasonal changes in the photosynthetic capacity of cones on a larch (Larix kaempferi) canopy

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Title: Seasonal changes in the photosynthetic capacity of cones on a larch (Larix kaempferi) canopy
Authors: Wang, W. -J. Browse this author
Watanabe, Y. Browse this author
Endo, I. Browse this author
Kitaoka, S. Browse this author
Koike, T. Browse this author →KAKEN DB
Keywords: chlorophyll
re-fix ratio
seasonal changes
Issue Date: Sep-2006
Publisher: Springer
Journal Title: Photosynthetica
Volume: 44
Issue: 3
Start Page: 345
End Page: 348
Publisher DOI: 10.1007/s11099-006-0034-5
Abstract: The seasonal changes of photosynthesis of cones of Japanese larch (Larix kaempferi Carr.) trees showed that gross photosynthetic rate of young cones (P G) was 2–3 µmol m−2 s−1 at surface area unit and P G/R D (dark respiration of cones) peaked about 0.7 in the same period, indicating that 70 % of respiratory CO2 was re-fixed. With maturation, P G and P G/R D sharply decreased. Chlorophyll content in cones was 3–20 % of that in leaves, which made it a limiting factor for photosynthesis and its content was closely correlated with photosynthetic capacity. Although sunken and linearly arranged stomatal organs were found on the scale of young cones, differently from the significant regulation of leaf photosynthesis, these stomata tended to be non-functional since CO2 is not limiting factor for cone photosynthesis. Thus photosynthesis of larch cones is an additional contribution to their development.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小池 孝良

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