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The progressive and ancestral traits of the secondary xylem within Magnolia clad - the early diverging lineage of flowering plants

100%

Wroblewska M. M.

Acta Societatis Botanicorum Poloniae

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2015

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tom 84

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nr 1

The qualitative and quantitative studies, presented in this article, on wood anatomy of various species belonging to ancient Magnolia genus reveal new aspects of phylogenetic relationships between the species and show evolutionary trends, known to increase fitness of conductive tissues in angiosperms. They also provide new examples of phenotypic plasticity in plants. The type of perforation plate in vessel members is one of the most relevant features for taxonomic studies. In Magnolia, until now, two types of perforation plates have been reported: the conservative, scalariform and the specialized, simple one. In this paper, are presented some findings, new to magnolia wood science, like exclusively simple perforation plates in some species or mixed perforation plates – simple and scalariform in one vessel member. Intravascular pitting is another taxonomically important trait of vascular tissue. Interesting transient states between different patterns of pitting in one cell only have been found. This proves great flexibility of mechanisms, which elaborate cell wall structure in maturing tracheary element. The comparison of this data with phylogenetic trees, based on the fossil records and plastid gene expression, clearly shows that there is a link between the type of perforation plate and the degree of evolutionary specialization within Magnolia genus.

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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

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2016

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nr 279

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Wood anatomy of ivy-hosting black alder (Alnus glutinosa Gaertn.)

67%

Yaman B.

Dendrobiology

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2009

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tom 62

41-45

The study aims at investigating the impact of ivy (Hedera helix L.) on the growth and on some wood anatomical characteristics of black alder trees. Ivy-hosting and non-hosting black alder have a similar wood anatomy in terms of qualitative properties. However, in ivy-hosting trees tangential and radial diameter of vessels are narrower (p <0.001), and inter-vessel pits are smaller (p <0.01), whereas vessel frequency is higher (p<0.05) than those of non-hosting ones. The average maximum ray height is greater (p<0.05), and ray number mm-1 is lower (p < 0.001) than those of non-hosting individuals. In addition, the last ten years’ average radial growth has decreased 39.5% compared to that of non-hosting black alder.

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

1 Dendrobiology

1 Kozak M.

1 Lotocka B.

1 Rykaczewska K.

1 Wroblewska M. M.

1 Yaman B.

1 2016

1 2015

1 2009

The progressive and ancestral traits of the secondary xylem within Magnolia clad - the early diverging lineage of flowering plants

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

Wood anatomy of ivy-hosting black alder (Alnus glutinosa Gaertn.)