Shokubutsugaku Zasshi
Online ISSN : 2185-3835
Print ISSN : 0006-808X
ISSN-L : 0006-808X
Volume 77 , Issue 916
Showing 1-4 articles out of 4 articles from the selected issue
  • von Akira MIYAWAKI
    1964 Volume 77 Issue 916 Pages 365-374
    Published: 1964
    Released: October 31, 2006
    JOURNALS FREE ACCESS
    Die Trittgesellschaften der Japanischen Inseln wurden auf ihr Artengefüge, ihre systematische Gliederung und ihre Verwandtschaft mit den Trittgesellschaften Europas untersucht. AuBerdem wurden sie, so gut das bisher möglich war, hinsichtlich ihrer Lebensbedingungen und ihrer Veabreitung verglichen.
    Es ergaben sich 6 Assoziationen:
    1. Juncus tenuis-Polygonum aequale-Ass. mit der Typischen und der Subass. von Eragrostis multicaulis(Tab. 1). Verbreitung: Osten und Süden von Hokkaido, nördlichster Teil Honshus.
    2. Matricaria matricarioides-Polygonum aequale-Ass, mit der subass. von Dactylis glomerata, Subass. von Eragrostis multicaulis und Typischer Subassoziation (Tab. 2). Verbreitung: Hokkaido und nördlichster Teil Honshus.
    3. Juncus tenuis-Eragrostis ferruginea-Ass. mit der Subass. von Paspalum thunbergii, Subass. von Digitaria violascens und Typischer Subassoziation (Tab. 3). Verbreitung: Honshu, z. B. Tamagawa-Mündung bei Yokohama.
    4. Carex incisa-Juncus tennis-Ass. mit der Subass. von Carex albata, Subass. von Digitaria violascens und Typischer Subassoziation (Tab. 4). Verbreitung: Vorerst nur aus den Bergen der Umgebung Yokohamas bekannt.
    5. Eragrostis multicaulis-Eragrostis ferruginea-Ass. mit der Subass. von Poa pratensis, Subass. von Cynodon dactylon und Typischer Subasoziation. In dieser Untergliederung der Assoziation spiegeln sich groBklimatische Unterschiede wieder Verbreitung: Honshu, Shikoku und Kyushu.
    6. Euphorbia makinoi-Sporobolus elongatus-Ass. mit der Subass. von Cyperus rotundus, Subass. von Arthraxon hispidus und Typischer Subassoziation. Verbreitung: Ryukyu-Inseln.
    Die beschriebenen Assoziationen verteilen sich auf die Verbände des Polygonion avicularis japonicae und des Euphorbio-Sporobolion elongati.
    Download PDF (1914K)
  • Tadashi FUJII, Shoho SUZUKI
    1964 Volume 77 Issue 916 Pages 375-380
    Published: 1964
    Released: October 31, 2006
    JOURNALS FREE ACCESS
    The effect of purine and pyrimidine derivatives upon photoperiodically induced germination was studied in Eragrostis seeds. The germination of seeds in question was induced only by a sequence of inductive dark period immediately after soaking and a subsequent light period, and it was strongly inhibited when the light-break treatment by red light was given in the inductive dark period.
    Kinetin and adenine did not affect the favorable length of the inductive dark period, but enhanced the light action in the subsequent inductive light period-especially in cases where the light dose was insufficient to promote germination. Moreover, it was shown that the inhibition of germination by light-break treatment may be nullified by the application of kinetin. This removal of light-break inhibition was also brought about by adenine, adenosine, AMP, GMP and CMP, but not by ADP, ATP, uracil, uridine, thymine, thymidine, and orotic acid.
    Download PDF (632K)
  • Noboru HARA
    1964 Volume 77 Issue 916 Pages 381-387
    Published: 1964
    Released: October 31, 2006
    JOURNALS FREE ACCESS
    Ontogeny of the reticulate venation in the pinnae of Onoclea sensibilis was examined.
    The reticulate pattern of venation is formed as the result of the anastomosis of the adjacent branches of dichotomizing procambial strands. It can be concluded that the basic developmental pattern of the venation of Onoclea is dichotomous.
    Download PDF (1917K)
  • Akio KUSANAGI
    1964 Volume 77 Issue 916 Pages 388-392
    Published: 1964
    Released: October 31, 2006
    JOURNALS FREE ACCESS
    Using cytidine-H3 as a marker for RNA synthesis and behaviour, the behaviour of the nucleolar RNA after the nucleolar dissolution was traced. Mitotic cells in root tips treated with cytidine-H3 for short period (10min.) were observed immediately after the treatment or after 5-60min. cultivation.
    No incorporation of cytidine-H3 was observed in metaphasic and/or anaphasic chromosomes and in the spindle body. Labeled anaphase chromosomes and spindle were observed in cells which were cultured in radioactivity free medium for 30-40min. after the treatment with cytidine-H3 for 10min.
    It has become clear that the nucleolar RNA moves on metaphasic chromosomes during the late-prophase or pro-metaphase and associates with metaphasic chromosomes. It is also clear that the nucleolar RNA seems to be distributed in the spindle body, and in the cytoplasm after the nucleolar dissolution.
    Download PDF (1928K)
feedback
Top