• Corpus ID: 182100163

Blattanatomie der Gymnospermen

@inproceedings{NappZinn1966BlattanatomieDG,
  title={Blattanatomie der Gymnospermen},
  author={Klaus Napp-Zinn},
  year={1966}
}

Comparative morphological, epidermal, and anatomical studies of Pinus roxburghii needles at different altitudes in the North-West Indian Himalayas

The results showed that potential conductance index was dependent on the climatic conditions of the habitat, and the anatomical properties of needles exhibited variation from lower to higher elevation, especially in the number and position of resin ducts.

Leaf dimorphism in Thuja plicata and Platycladus orientalis (thujoid Cupressaceae s. str., Coniferales): the changes in morphology and anatomy from juvenile needle leaves to mature scale leaves

  • V. M. Dörken
  • Environmental Science
    Plant Systematics and Evolution
  • 2013
A new kind of “superimposed bifaciality” occurs with the change from juvenile needle leaves to mature scale leaves, where the morphological abaxial side of a scale leaf becomes functionally and physiologically adaxial by reorientation of the palisade parenchyma and stomata.

The systematic and palaeoecological value of foliage anatomy in Late Palaeozoic medullosalean seed-plants

The anatomical evidence of medullosalean foliage known from cuticles and coal balls is reviewed, and a number of features previously regarded as xeromorphic are re-interpreted as adaptations to high-humidity conditions.

THE STRUCTURE OF THE SECRETIVE TISSUES AND CONTENT OF THE VOLATILE OIL IN SOME SPECIES OF GYMNOSPERMS

Analysis of the volatile oil extracted from the leaves of these species revealed the presence of the following substances: -pinen in volatile oil of Pinus sylvestris, bornile acetate, �-pinen, camphene and - pinen in that from Abies alba and �- Pinen in the cold season and thujana, during summer, in volatileOil from Thuja orientalis.

COMPARATIVE STUDY OF THE SECRETORY STRUCTURES AND VOLATILE OILS IN SOME PINUS SPECIES

The research is focused on the comparative analysis of volatile oils extracted through hidrodistillation from the leaves of 4 Pinus species. The differences between the secretory structures (resin

Frost resistance and ice nucleation in leaves of five woody timberline species measured in situ during shoot expansion.

Frost resistance and ice nucleation temperatures of leaves, from bud swelling until after full expansion, were measured in situ for five major woody timberline species with recently developed field freezing equipment, indicating that in situ freezing exotherms were not accurate estimators of frost damage in these species.

Effects of drought on needle anatomy of Pinus canariensis

Changes in needles of Pinus canariensis, which adapt needles to drought conditions, are triggered by drought stress experienced while needles are growing.

Stomatal patchiness in conifers: experiments with Picea abies (L.) Karst. and Abies alba Mill.

SummaryStrong evidence for the occurrence of pronounced stomatal patchiness in needles of Picea abies (L.) Karst. and Abies alba Mill. was found using various indirect methods. Anatomical

Histological examination of spruce needles from a long-term gas exchange experiment in pure and polluted air in the field

SummaryAt the end of a 4-year period of gas exchange measurements in a natural stand in the Lower Bavarian Forest, needles of an adult spruce [Picea abies (L.) Karst.] were harvested from two

Hydraulic conductances of angiosperms versus conifers: similar transport sufficiency at the whole-plant level.

The findings did not refute the "slow seedling" hypothesis per se, but failed to support one of the proposed mechanisms, and variations in other resistance components and hydraulic architecture ultimately equalize the sufficiency of water transport to leaves of conifers and angiosperms.