Photosynthetic Units of Sun and Shade Plants

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منابع مشابه

Photosynthetic units of sun and shade plants.

A computer analysis of fluorescence induction curves of leaves treated with 3-(3,4-dichlorophenyl)-1,1 dimethylurea was done for several species. These measurements gave the ratios of the total chlorophyll to photosystem II reaction centers. This communication is a preliminary survey of sun and shade plants and demonstrates a significant variation in this ratio. In the sun plants, the photosynt...

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Dependence of photosynthetic rates on leaf density thickness in deciduous woody plants grown in sun and shade.

Comparisons of photosynthetic rates were made on leaves of ten species of woody dicotyledons grown in the field under full sun or under a canopy which transmitted approximately 18% of full light. Photosynthesis and dark respiration were measured and compared on various bases: area, chlorophyll, fresh weight of lamina, density thickness (fresh weight per unit area), and protein.Light-saturated p...

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Photosynthetic Rates of Sun versus Shade Leaves of Hyptis emoryi Torr.

Leaves on a bush of Hyptis emoryi Torr. varied in length from less than 1 cm when development occurred in full sunlight (e.g. 40 Mjoules m(-2)) to over 7 cm when the total daily solar irradiance was less than 3 Mjoules m(-2). The 1-cm sun leaves were 3-fold higher than the 7-cm shade leaves in chlorophyll per unit area, mesophyll thickness, and the internal to external leaf area ratio (A(mes)/A...

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Activity in Sun and Shade Plants1

The consequences of light adaptation and acclimation of photosynthesis on photosynthetic nitrogen use efficiency (NUE), particularly as it relates to the efficiency of ribulose-1,5-bisphosphate carboxylase (Rubisco) use in photosynthetic CO2 assimilation, was studied in the sun species Glycine max and the shade species Alocasia macrorrhiza. Both G. max and A. macrorrhiza were found to possess t...

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CO2 Supply during Photosynthesis of Sun and Shade Grown CAM Plants in Relation

Leaves of Kalancho#pinnata were exposed in the dark to air (allowing the fixation of C02 into malic acid) or 2% 02,0% CO2 (preventing malic acid accumulation). They were then exposed to bright light in the presence or absence of external CO2 and light dependent inhibition of photosynthetic properties assessed by changes in 77 K fluorescence from photosystem II (PSII), light response curves and ...

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ژورنال

عنوان ژورنال: Plant Physiology

سال: 1981

ISSN: 0032-0889,1532-2548

DOI: 10.1104/pp.67.3.580