Microstructure of fruits and seeds of selected species of Hydrangeaceae (Cornales) and its systematic importance

• Autorzy: Morozowska M. , Woznicka A. , Kujawa M.

Warianty tytułu

PL

Mikrostruktura owoców i nasion wybranych gatunków z Hydrangeaceae (Cornales) i jej znaczenie systematyczne

• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of the study on fruit and seed morphology and anatomy of some chosen species of Hydrangeaceae. Fruit micromorphology, seed shape and size, seed coat pattern, testa thickness, and endosperm cells were investigated in Hydrangea heteromalla, H. paniculata, Philadelphus californicus, P. delavayi, P. incanus, P. inodorus, P. pubescens var. verrucosus, P. tenuifolius, Deutzia compacta, D. rubens, and D. scabra. Differences of potential taxonomic significance were found in the ornamentation of the fruit and the pistil surface in the Hydrangea species. The examined seeds were characterized by reticulate primary sculpture with different size and shape of the testa cells. The protrusive secondary sculpture was observed on the Hydrangea seeds. The seeds of the Philadelphus species were characterized by the rugate secondary sculpture. The seeds of the Deutzia species had sunken secondary sculpture of different patterns and these differentiations are of systematic importance. The endosperm cell walls were very thin in the Hydrangea and Philadelphus seeds, while they were evenly thick in the Deutzia seeds. That difference may be of systematic importance. The average thickness of the two-layered testa was 3.51–11.50 μm. Its inner and outer layers thickness varied from 2.27–9.25 μm and 1.24–4.05 μm, respectively. Most of the differences were found to be significant.

PL

Mikromorfologia owoców, długość i kształt nasion, skulptura nasion, grubość łupiny nasiennej oraz struktura bielma zostały zbadane dla Hydrangea heteromalla, H. paniculata, Philadelphus californicus, P. delavayi, P. incanus, P. inodorus, P. pubescens var. verrucosus, P. tenuifolius, Deutzia compacta, D. rubens and D. scabra. Wzór urzeźbienia powierzchni owocu i szyjki słupka gatunków z rodzaju Hydrangea jest taksonomicznie istotnie zróżnicowany. Nasiona gatunków Hydrangea różnią się ponadto długością oraz formą wykształcenia bieguna mikropylarnego i chalazalnego. Wtórna skulptura nasion H. heteromalla charakteryzuje się obecnością płytkich zagłębień na brzegach ścian antyklinalnych. Nasiona wszystkich gatunków z rodzaju Philadelphus charakteryzują się siateczkowatym typem skulptury pierwotnej i skulpturą wtórną w postaci delikatnych zmarszczeń. Na nasionach gatunków z rodzaju Deutzia stwierdzono zapadnięty typ skulptury wtórnej o zróżnicowanym wzorze, co uznano za cechę o znaczeniu systematycznym. ściany komórkowe komórek bielma były bardzo cienkie w nasionach gatunków z rodzajów Hydrangea i Philadelphus, natomiast w nasionach gatunków z rodzaju Deutzia były one równomiernie zgrubiałe. Różnice te uznano za cechę istotną systematycznie. àupina nasienna wszystkich zbadanych gatunków jest dwuwarstwowa, a wzajemny stosunek grubości jej warstwy zewnętrznej i wewnętrznej jest zmienny.

• Wydawca: -
• Czasopismo: Acta Scientiarum Polonorum. Hortorum Cultus
• Rocznik: 2012
• Tom: 11
• Numer: 4
• Opis fizyczny: p.17-38,fig.,ref.

Twórcy

autor

Morozowska M.

• Department of Botany, Poznan University of Life Sciences, Wojska Polskiego 71C, 60-625 Poznan, Poland

autor

Woznicka A.

• Poznan University of Life Sciences, Poznan, Poland

autor

Kujawa M.

• Adam Mickiewicz University, Poznan, Poland

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