Embryo and seedling morphology of some Trifolium L. species (Fabaceae).

Several studies reported a negative relationship between altitude and seed mass. In cactus species, seed mass has been also related to seedling morphology (size and shape). Here we studied Gymnocalycium monvillei (Lem.) Pfeiff. ex Britton & Rose, a cactus species with a wide altitudinal distribution, with the main aim of analyzing how altitude affects seed mass and seedling size (height and width) and shape (globose or columnar). We collected seeds from five sites along the entire altitudinal distribution of the species in the Córdoba Mountains (sites were located between 878 and 2230 m a.s.l.), encompassing a marked climatic gradient (6 °C of mean annual temperature difference between the extreme sites). Seed mass and seedling traits were measured in the laboratory. Seedling height increased with altitude, whereas seed mass was not related to this parameter. Seedlings became more globose (reduced surface/volume ratio) with decreasing altitude. Variation in seedling shape along the altitudinal gradient may be related to the contrasting climatic conditions to which seedlings are exposed, and could account for the wide altitudinal distribution of G. monvillei. Our results highlight the importance of seedling traits in the species’ response to climatic change.

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Taxonomic revision of Hannafordia (Lasiopetaleae: Sterculiaceae (Malvaceae s.l.))

Australian Systematic Botany ◽

10.1071/sb00019 ◽

2001 ◽

Vol 14 (1) ◽

pp. 101

Author(s):

C. F. Wilkins ◽

J. A. Chappill

Keyword(s):

Chromosome Number ◽

Taxonomic Revision ◽

Key Distribution ◽

Seedling Morphology ◽

New Subspecies ◽

Distribution Maps ◽

Taxonomic Descriptions

Taxonomic revision of the endemic Australian genus Hannafordia F.Muell. identified five taxa, including three recognised species, a new subspecies H. quadrivalvis F.Muell. subsp. recurva C.F.Wilkins and a new subspecific combination H. bissillii F.Muell. subsp. latifolia (E.Pritzel) C.F.Wilkins. Taxonomic descriptions, a key, distribution maps, illustrations, anatomical findings and seed and seedling morphology are presented. A chromosome number of n = 10 is the first published record for the genus.

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Taxonomic Relevance of Seed and Seedling Morphology in Some Species of Medicago (Leguminosae)

Egyptian Journal of Botany ◽

10.21608/ejbo.2021.43277.1558 ◽

2021 ◽

Vol 0 (0) ◽

pp. 0-0

Author(s):

Z.A. Turki ◽

Marwa M. Hegazy

Keyword(s):

Seedling Morphology

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Growth and development of Hippophae rhamnoides L. introduced in Absheron

NATURE AND SCIENCE ◽

10.36719/2707-1146/03/35-38 ◽

2020 ◽

Vol 02 (03) ◽

pp. 35-38

Author(s):

Kamala Arastun Sadigov ◽

Keyword(s):

Root System ◽

System Development ◽

Growth Dynamics ◽

Climatic Conditions ◽

Hippophae Rhamnoides ◽

Seedling Morphology ◽

Hippophaë Rhamnoides ◽

Root System Development ◽

Hippophae Rhamnoïdes L ◽

Seed Propagation

The presented article provides seed propagation, seedling morphology and growth dynamics, root system development in connection with the introduction of Hippophae rhamnoides L. species found in our natural flora in Absheron. The study found that the species Hippophae rhamnoides L. is well adapted to the soil and climatic conditions of Absheron and can be grown in cultural conditions. Key words: Hippophae rhamnoides L., introdiction, seed, repoduction, morphology, dewelopment, root system

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