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  1. No Access

    Article

    Differentiation and structural decline in the leaves and bark of birch (Betula pendula) under low ozone concentrations

    Leaf and bark structure of a birch clone (Betula pendula Roth) continuously exposed to charcoal-filtered air or charcoal-filtered air plus ozone (0.05, 0.075, 0.1 μl 1-1) was investigated throughout one growing s...

    Madeleine S. Günthardt-Goerg, Rainer Matyssek, Christoph Scheidegger… in Trees (1993)

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    Article

    Seasonal growth, δ13C in leaves and stem, and phloem structure of birch (Betula pendula) under low ozone concentrations

    The growth of potted birch cuttings (one clone of Betula pendula) was studied under low O3 concentrations (0, 0.050, 0.075, 0.100 μl l-1) throughout an entire growing season. With increasing O3 dose, 20–50% of al...

    Rainer Matyssek, Madeleine S. Günthardt-Goerg, Matthias Saurer, Theodor Keller in Trees (1992)

  3. No Access

    Article

    Impairment of gas exchange and structure in birch leaves (Betula pendula) caused by low ozone concentrations

    Injury caused by low O3 concentrations (0, 0.05, 0.075, 0.1 μl 1-1) was analyzed in the epidermis and mesophyll of fully developed birch leaves by gas exchange experiments and low-temperature SEM: (I) after leaf ...

    Rainer Matyssek, Madeleine S. Günthardt-Goerg, Theodor Keller… in Trees (1991)

  4. No Access

    Article

    The effect of iron chelate fertilization of poplar upon CO2-uptake, leaf size, and content of leaf pigments and iron

    Potted poplars (strainsmarilandica, serotina andFlachslanden ofPopulus euramericana) which developed iron-deficiency symptoms (chlorosis of upper leaves, winter die-back of leader, flushing of lateral buds) were ...

    Theodor Keller, Werner Koch in Plant and Soil (1964)