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Morphology and anatomy of the root system of new potato cultivars Part II. Root anatomy

100%

Lotocka B., Kozak M., Rykaczewska K.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

2016

nr 279

Survival of an endangered orchid Liparis loeselii in habitats with different water level fluctuations

100%

Megre D., Roze D., Dokane K., Jakobsone G., Karlovska A.

Polish Journal of Ecology

2018

tom 66

nr 2

Liparis loeselii (L.) Rich. is an endangered orchid species which occurs in wetland habitats. For successful conservation of this orchid it is necessary to recognize its adaptive traits and special habitat requirements. Therefore, we examined morphological and anatomical traits in relation to the water level, cover of vascular plants and seed viability of L. loeselii in habitats with different water level fluctuations. Field studies of L. loeselii were carried out in nine localities and four habitat types: alkaline fen, calcareous fen with Cladium mariscus, transition mire and quaking bog. The fluctuations of seasonal water level were defined in the range from dry substrate to short time flooding (up to two weeks). Leaf length and width of 30 flowering specimens of L. loeselii as well as angle between the leaf blade and the axis of the inflorescence were measured at each locality. Seed viability and root anatomy were examined in the laboratory. The leaf angle was significantly affected (P < 0.05) by water level in the studied habitat. The leaf length to width ratio in each population of L. loeselii did not show significant differences between the years, but was characteristic for the habitat type. L. loeselii sensitivity to the long-term flooding in the habitat is associated with a lack of aerenchyma in its roots. During short-term flooding specimens of L. loeselii can survive due to a shallow root system and hyponastic leaf movements. As evidenced by seed viability, the most favourable growth conditions for L. loeselii are in the habitats with partially water saturated substrate with balanced water supply.

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Secretory structures of subterranean organs of some species of the Cardueae, and their diagnostic value

67%

Fritz E., Saukel J.

Acta Biologica Cracoviensia. Series Botanica

2011

tom 53

nr 1

Secretory ducts and cavities of roots and rhizomes are typical features of the Cardueae tribe in the Asteraceae family. We used light microscopy to analyze the anatomy of the subterranean organs of 21 species of 13 genera of the Cardueae, with particular attention to the secretory system, interpreted in taxonomic terms. The anatomy of secretory ducts varied greatly. A new measurement quotient, C1 [length of epithelial cells (longitudinal section)] and C2 [length of adjacent cells (longitudinal section)] was established. Different types of ducts are described based on type of development and the size ratios among epithelial cells. Detailed anatomical descriptions of the ducts are given, together with their occurrence in particular taxa. The simultaneous presence of various secretory ducts within a single species and their spatial position relative to other prominent anatomical features provide valuable characters for discriminating the studied Cardueae species. These analyses are of particular interest for identification of herbal drugs as, besides chemical analytical techniques such as chromatographic fingerprinting, light microscopy is a common method for purity controls and thus required in official pharmacopeias.

Ograniczanie wyników

1 Acta Biologica Cracoviensia. Series Botanica

1 Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

1 Polish Journal of Ecology

1 Dokane K.

1 Fritz E.

1 Jakobsone G.

1 Karlovska A.

1 Kozak M.

1 Lotocka B.

1 Megre D.

1 Roze D.

1 Rykaczewska K.

1 Saukel J.

1 2018

1 2016

1 2011

Wyniki wyszukiwania

Morphology and anatomy of the root system of new potato cultivars Part II. Root anatomy

Survival of an endangered orchid Liparis loeselii in habitats with different water level fluctuations

Secretory structures of subterranean organs of some species of the Cardueae, and their diagnostic value