Description: English: Pythium. Optical microscopy technique: Negative phase contrast. Magnification: 1200x (for picture width 26 cm ~ A4 format). Čeština: Pythium. Mikroskopická technika: Negativní fázový kontrast. Zvětšení: 1200x (při šířce obrázku 26 cm ~ A4 formát). : This image comes from the archive of Josef Reischig and is part of the 384 pictures kindly donated by the authorship heirs under CC BY SA 3.0 license as a part of Wikimedia Czech Republic's GLAM initiative. čeština | English | +/−. Date:. Source: Author's archive. Author: Doc. RNDr. Josef Reischig, CSc..
Description: Македонски: (горе) Несептирани хифи од патогенот Pythium debaryanum кои ја формираат мицелијата на габата. По должина на хифите се развиваат спорангии кои може директно да ‘ртат во мицелија, или да формираат зооспори со кои се извршуваат инфекциите. (долу) Оогонија и антеридија, органи за полова репродукција кај Pythium debaryanum. По оплодувањето на оогонијата се создава спора со дебела обвивка наречена трајна спора или ооспора која може ‘ртливоста да ја сочува повеќе години. Со ооспорите патогенот ги извршува примарните зарази. English: (top) No septate hyphae of the pathogen Pythium debaryanum that form the fungus mycelium. Along the hyphae are develop sporangia that can directly germinate into mycelium or form zoospores that carry infections. (bottom) Oogonia and antheridia, sexual reproduction organs of Pythium debaryanum. After oogonia fertilization, is created spore with thick sheath called permanent spore or oospore that may preserve older the germination. With oospores the pathogen performs the primary infections.English: No septate hyphae, oogonia and antheridia of the pathogen Pythium debaryanum. Date: 13 December 2015, 01:01:46. Source: Own work. Author: Tashkoskip.
Description: Македонски: Култура од фитопатогената габа Pythium debaryanum причинител на болеста сечење (топење) на расадот кај тутунот и градинарските култури. English: Culture of phytopathogens fungus Pythium debaryanum cause of illness cutting (fusion) of the tobacco seedlings and vegetable crops.English: Culture of the fungus Pythium debaryanum. Date: 26 January 2012, 09:31:37. Source: Own work. Author: Tashkoskip.
Description: English: PLATE 37 PHYSIOLOGICAL STUDY OF THE PARASITISM OF PYTHIUM DEBARYANUM HESSE ON THE POTATO TUBER by Lon A. Hawkins and Rodney B. Harvey, Journal of Agricultural Research voi. xviii, no. 5 Photographs enlarged from portions of a motion photomicrograph, showing the method of cell wall penetration by Pythium hyphae. A. — Shows the hypha growing against the potato cell wall. Sufficient pressure has already been applied to cause the hypha to bend. Notice that this bending increases in later photographs. B. — A little later stage than A. C. — The tip has broken through as a small tube D. — Penetration is complete. Notice the constriction of the hypha at the point where it penetrates the potato cell wall. Date: 1 December 1919. Source: https://archive.org/stream/journalofagricul18unit/journalofagricul18unit Journal of agricultural research. Author: Lon A. Hawkins, Rodney b. Harvey, United States. Dept. of Agriculture; Association of American Agricultural Colleges and Experiment Stations; Association of Land-Grant Colleges and Universities; Association of Land-Grant Colleges.
Description: English: PHYSIOLOGICAL STUDY OF THE PARASITISM OF PYTHIUM DEBARYANUM HESSE ON THE POTATO TUBER by Lon A. Hawkins and Rodney B. Harvey, Journal of Agricultural Research voi. xviii, no. 5 PLATE 36 Photographs enlarged from portions of a motion photomicrograph, showing the method of cell wall penetration by Pythium hyphae. A. — Shows hypha growing toward the potato cell wall. B. — Shows hypha attached to wall and about to penetrate. C. — The tip has just broken through the wall. D. — The penetration is complete. Note the black line at the point where the hypha penetrates the wall. This may be due to a rolling up of the potato cell wall about the hypha or to a difference in refraction caused by compression of the wall. Date: 1 December 1919. Source: https://archive.org/stream/journalofagricul18unit/journalofagricul18unit Journal of agricultural research. Author: Lon A. Hawkins, Rodney b. Harvey, United States. Dept. of Agriculture; Association of American Agricultural Colleges and Experiment Stations; Association of Land-Grant Colleges and Universities; Association of Land-Grant Colleges.
