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Trehalose, Respiration und Photosynthese in dem Farn Ophioglossum , Ein neuer Schattenblattypus
Author(s) -
Löhr Erika
Publication year - 1968
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1968.tb07291.x
Subject(s) - fern , rhizome , photosynthesis , botany , respiration , horticulture , biology , dry weight , sugar , dry matter , trehalose , respiration rate , dehydration , chemistry , food science , biochemistry
Trehalose, Resipration and Photosynthesis in the Fern Ophioglossum. A new Type of Shade‐Leaves .—Trehalose has been identified in the leaf‐blades, sporehouses, stems and rhizomes of the fern Ophioglossum vulgatum by paper chromatography. The leaf‐blades represent a hitherto undescribed type of shade‐leaf. Just like normal shade‐leaves, they have a low respiratory activity ∼0.2–0.3 mg CO 2 per 50 cm 2 leaf‐blade (one side only) and hour at 20°C and low maximal photosynthesis: 2–2.7 mg CO 2 per 50 cm 2 leaf‐blade (one side only) and hour at 20°C and a CO 2 ‐pressure of 0.25 mm Hg and a light intensity of 20,000 lux. But in contrast to the hitherto described type of shade‐leaves, the area per 1 g fresh weight is that of typical sun‐leaves which is 35–50 cm 2 (one side only) per 1 g fresh weight. The large area weight is connected with particularly low dry matter content ∼10–11 per cent in the leaf‐blades; this indicates that the material is a kind of semisucculent shade‐leaf.