Shokubutsugaku Zasshi

[title in Japanese]

1952 Volume 65 Issue 767-768 Pages Cover_767-
Published: 1952
Released on J-STAGE: February 20, 2024

DOIhttps://doi.org/10.15281/jplantres1887.65.767-768_Cover_767

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The re-examination and the limit of applicability of the compensation method to the measurement of sap streaming in plants

Yusaburo KUNIYA

1952 Volume 65 Issue 767-768 Pages 93-101
Published: 1952
Released on J-STAGE: December 05, 2006

DOIhttps://doi.org/10.15281/jplantres1887.65.93

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Observational and Experimental Studies of Meiosis with Special Reference to the Bouquet Stage

X. Response of chromosomes in meiotic prophase to centrifugal force

Tosisuke HIRAOKA

1952 Volume 65 Issue 767-768 Pages 102-108
Published: 1952
Released on J-STAGE: December 05, 2006

DOIhttps://doi.org/10.15281/jplantres1887.65.102

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A revision of the new genera from New Guinea described by C. Lauterbach

Sumihiko HATUSIMA

1952 Volume 65 Issue 767-768 Pages 109-111
Published: 1952
Released on J-STAGE: December 05, 2006

DOIhttps://doi.org/10.15281/jplantres1887.65.109

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Autecological study of mosses in respect to water economy

I. On the minimum hydrability within which mosses are able to survive

Harumi OHCI

1952 Volume 65 Issue 767-768 Pages 112-118
Published: 1952
Released on J-STAGE: December 05, 2006

DOIhttps://doi.org/10.15281/jplantres1887.65.112

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1. The adaptability of mosses to their different habitats was ascertained by researching into their minimum hydrability within which mosses are able to survive, and by making inquiries the relationship between it and water economy in mosses.
2. On the relationship among maximum hydration (M), hydrability of air-dried samples (A), minimum hydrability (m) and the hydrability of “dead-and-air-dried” samples (a) of xerophilous (X), of merophilous (Me) and of hygrophilous (H) mosses, the following formulations seem to be given: M, X<M, Me<M, H; m, X_??_m, Me<m, H; A, X_??_m, X_??_a, X; A, Me_??_m, Me>a, Me; and A, H(dead)<m, H.
3. It seems that xerophilous mosses do not easily reduce their water below the quantity of their own minimum hydrability when they are air-dried, that they are capable of imbibing vapour in the air which is not saturated with vapour bait is low in relative humidity, and that they are capable of maintaining water above their own minimum hydrability in the air. But it seems that hygrophilous ones have not such peculiarities. These are probably caused mainly by the peculiarities of their protoplast.
4. It seems that maximum hydration and minimun hydrability being low in xerophilous mosses is favourable for their activities even in relatively dry conditions; on the other hand, it seems that hygrophilous ones, whose both the hydration and hydrability are high, are capable of being active only in the condition of environments having fairly much water in them.
5. “Dead-and-air-dried” samples of xerophilous mosses have the water-holding nature being nearly equal to that of air-dried (living) ones; this behavior seems to be important especially in their ecology.

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Physiological Studies on the Winter Storage of Ginger and Potato in Central Japan

Takeyosi HORI

1952 Volume 65 Issue 767-768 Pages 119-122
Published: 1952
Released on J-STAGE: December 05, 2006

DOIhttps://doi.org/10.15281/jplantres1887.65.119

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Taxonomic studies of soil Actinomyces in Japan. II-2

Shuzo MASUMOTO

1952 Volume 65 Issue 767-768 Pages 123-127
Published: 1952
Released on J-STAGE: December 05, 2006

DOIhttps://doi.org/10.15281/jplantres1887.65.123

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On the red and green snow newly found in Japan II

Yoshio KOBAYASHI, Hiroshi FUKUSHIMA

1952 Volume 65 Issue 767-768 Pages 128-136
Published: 1952
Released on J-STAGE: December 05, 2006

DOIhttps://doi.org/10.15281/jplantres1887.65.128

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1. During the microbiological investigation of the Oze-Moor which is situated in the northern part of Nikko National Park, the writers found the socalled “Red and Green Snow” on the snow left unmelted of several locality about 1500-1800 meters above sea-level in May-June 1951. They were also given the samples of red snow which were collected on the mountain ridge (ca. 2000m.) of Mt. Shirouma in May 1951 and on the snow valley (ca. 2500m.) near Mt. Eboshi in August 1951. These were spreading over the snow surface as small irregular patches measuring from several centimeters to one meter in diameter.
2. Cryophilous species determined from these samples are as follows. Fungi: Chionaster nivalis, Selenotila nivalis. Algae: Chlamidomonas nivalis, Chodatella brevispina, Scotiella nivalis, Raphidonema nivale, Raphidonema Tatrae. Japanese Chodatella brevispina seems to be the slight modification of the European type differring in its having thicker and longer spines (2.1-2.8μ long). As for the non-cryophilous fungal members, the yeast-like cells, Chytridiaceous zoosporangium, hyphae of Dematium, spores of Guepiniopsis, Prosthemium, Scolecosporium, Asterosporium and others may be mentioned, Furthermore, Mucor hiemalis (-), Penicillium sp., several species of bacteria were separated as pure culture.
3. The main element of red snow is Chlamydomonas nivalis which was found in the stage of chlamydospores, some of them having gelatinous outer membrane.
4. The main element of green snow is commonly Chodatella or rarely Chlamydomonas. This type of green snow seems to be different from European Raphidonema- Type and American Chlamydomonas-Type.
5. Ph-range of green snow was 4.2-4.8 in half melting condition of materials.
6. Red snow was found in such a place exposed to the direct rays of the sun as mountain ridge, snow valley or Fagus-forest. On the contrary, green snow was spreading in the dark places of coniferous forest.
7. Chionaster nivalis is a kind of fungi and seems to pass the summer season in the stage of chlamydospores which are supposed to be formed by the conjugation of two cells.
8. We are now studying the life history of Chlamydomonas nivalis, Chionaster nivalis and Selenotila nivalis, the latter two being not yet settled in their systematic position. The question how they live in summer season is left unsolved.

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Physiological researches of pollen (I)

On the protoplasmic streaming in the pollen tube

Yozo IWANAMI

1952 Volume 65 Issue 767-768 Pages 137-144
Published: 1952
Released on J-STAGE: December 05, 2006

DOIhttps://doi.org/10.15281/jplantres1887.65.137

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Diversaj tipoj de la protoplasmafluo estas observataj en la polentubo de lilioj (fig. 2, 3). Rapideco de la fluo ne estas konstanta: ekzemple, ci malgrandi?as la? la kreskado de la tubo (fig. 4, 5). La plej granda rapideco trovita estas 9.5μ ciusekunde. Kreskanta polentubo ciam havas capforman plasmoamason ce la pinto, kion mi nomis “capblock” (fig. 7). Disigitaj pecoj protoplasmaj ankaü havas la kapablon fluadi inter kaj ekster la tubo (fig. 2, 6).

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On the sex of some wood-destroying fungi

Katsuji KIMURA

1952 Volume 65 Issue 767-768 Pages 145-148
Published: 1952
Released on J-STAGE: December 05, 2006

DOIhttps://doi.org/10.15281/jplantres1887.65.145

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CONTENTS

1952 Volume 65 Issue 767-768 Pages Cover_768-
Published: 1952
Released on J-STAGE: February 20, 2024

DOIhttps://doi.org/10.15281/jplantres1887.65.767-768_Cover_768

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