Micromorphological characters of seeds
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Aethionema aytachii Ertuğrul & Hamzaoğlu, a new species from central Anatolia that grows on marly hills in the Ayaş district of Ankara Province (Turkey), is described and its relationships and distinguishing characters from the closest relative A. dumanii are discussed. The shape of pollen grains of A. aytachii is tricolpate, and its seed-coat sculpture is verrucate. Sequence data of the internal transcribed spacer region (ITS) of the new species was used to determine about its phylogenetic relation within Aethionema.
10p langthannam 29-12-2021 6 0 Download
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Macro- and micromorphological features of fruit and seeds belonging to 12 taxa genera of Matthiola W.T.Aiton were studied via stereomicroscope and scanning electron microscope. In macromorphological studies, the following variables were investigated: the shape, size, and color of fruit and seeds; the length of fruiting pedicel; the structure of the median vein; stigma (horns); and trichome properties and density in fruit. In micromorphological studies, the presence or absence of seed wings, seed coat pattern in disc and wing, and epidermal cell shape in disc and wing were determined.
13p tudichquannguyet 29-11-2021 7 1 Download
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This study presents macro- and micromorphological characters, including fruit and seed shape, size, colour, fruiting pedicel size, fruit hair and density, seed coat pattern, epidermal cell shape, and anticlinal and periclinal cell walls. The results showed that the morphological characteristics of the fruit and seed could be used as criteria to distinguish genera and tribes.
10p vibasque27 27-03-2019 25 0 Download
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Seed micromorphology of 20 species of Minuartia L. (Caryophyllaceae) that represent 2 different subgenera (i.e. Minuartia subgen. Spergella (Fenzl) McNeill and Minuartia subgen. Minuartia) were examined using scanning electron microscopy. Some qualitative and quantitative characters such as seed length and width, seed shape, cell shape, and cell ornamentations were studied.
9p vi4mua 24-02-2019 15 1 Download
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Seed coat morphology of 15 species of Ipomoea L. was examined comparatively using scanning and light microscopy methods in order to evaluate their diagnostic value for systematic studies. Macro- and micromorphological characters, including seed shape, colour, size, seed surface, epidermal cell shape, anticlinal boundaries, and periclinal cell wall are presented.
14p vi4mua 24-02-2019 28 1 Download
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Seeds of 21 taxa of the genera Dactylorhiza (incl. Coeloglossum), Gymnadenia (incl. Nigritella) and Pseudorchis were examined by light microscope and SEM. Qualitative and quantitative characters were analyzed. In Dactylorhiza, the seeds are fusiform, but some populations of D. viridis show clavate seeds. According to the ornamentation of the periclinal walls, 3 types of seeds are recognized in this genus.
13p vikimsa 22-02-2019 14 1 Download
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Aristolochia altanii İlçim & Behçet sp. nov. is described from Turkey and illustrated. The specimens were collected from Kahramanmaraş in South Anatolia. The new species is closely related to A. guichardii and A. brevilabris. However, this species differs in some important characteristics, such as the length of the pedicel and the perianth, the indument of the perianth limb, and the micromorphology of the pollen and the seeds. The diagnostic characters are discussed and taxonomic comments are presented.
6p vikimsa 22-02-2019 21 1 Download
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Astragalus is one of the largest genera of angiosperms and a characteristic component of the steppes and mountains of North Asia. Here, we used scanning electron microscopy to investigate the seed morphology of 56 species of the genus from North Asia. In Astragalus, seed color varies from yellow–green, greenish brown, reddish brown to grayish brown.
12p caplock2711 21-02-2019 28 0 Download