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Volume 63, Issue 745-746
Displaying 1-14 of 14 articles from this issue
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Hiroyuki HIROSE1950 Volume 63 Issue 745-746 Pages 107-111
Published: 1950
Released on J-STAGE: January 26, 2011
JOURNAL FREE ACCESS1. Pigment is not evenly distributed in the cell of Cyanidium caldarium, but clearly localized in the protoplast. This fact has been pointed out by L. Geitler for the first time and later by K. Negoro. However, they could not be assured of the existence of pigmented body as a component of protoplast which is a true plastid.
2.The living cell content of the present plant has been precisely observed and the chlorophyll composition was examined. The existence of true plastid which is obviously distinguishable from hyaline protoplast and contains chlorophyll a, carotin and xanthophyll, but no chlorophyll b was proved in the present study.
3.The morphological description of plastid, description of genus and species, distribution of this alga were given, and phylogeny of the present species were discussed and then the systemaic position of Cyanidium was transferred from Cyanophyceae to Chlorophyceae.View full abstractDownload PDF (737K) -
1950 Volume 63 Issue 745-746 Pages 112,117-118
Published: 1950
Released on J-STAGE: February 20, 2024
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III. Behaviour of crystal-containing vacuoles and pigmented bodies in premeiotic and meiotic stagesTosisuke HIRAOKA1950 Volume 63 Issue 745-746 Pages 113-117
Published: 1950
Released on J-STAGE: January 26, 2011
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1950 Volume 63 Issue 745-746 Pages 117
Published: 1950
Released on J-STAGE: January 26, 2011
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Shigeru MIKI, Shigeru HIKITA1950 Volume 63 Issue 745-746 Pages 119-123_1
Published: 1950
Released on J-STAGE: January 26, 2011
JOURNAL FREE ACCESS1) Measuring the sizes the guard cells of stomata and the epidermal cells in the remains of Metasequoia and Sequioa which are found in Japan in the strata since Tertiary, I could know that they were nearly the same as those of Metasequoia that now grows. in China or Sequoia that in California.
2) It is a well-known fact that there is a polyploidy relation between the sizes guard, cells of stomata and the epidermal cells and those of the plants in their intimate relations.
Chromosome of Metasequoia measure as 2n=22. Chromosome of Sequoia measure as 2n=66. So I inferred that the Chromosomes of the remains must be the same as these.
3) The epidermis of Metasequoia has a waved shape like living species and is clearly distinguished from the straight shape of Sequoia, this is very useful for the discrimination of the two or another genera.
4) Metasequoia dicovered at Tokiguti (Prov. Mineo, Japan) was only the cone of Metasequoia japonica MIKI.(1941), and as the leaves of it are small, it seems that they both belong to the same species, Metasequoia japonica.View full abstractDownload PDF (1930K) -
1950 Volume 63 Issue 745-746 Pages 123-124
Published: 1950
Released on J-STAGE: February 20, 2024
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IV. Verbreitung von D. hirsuta in Formosa u. Liukiu InselnSeizi Tatuno1950 Volume 63 Issue 745-746 Pages 125-130
Published: 1950
Released on J-STAGE: January 26, 2011
JOURNAL FREE ACCESSIn meinen vorigen Berichten (1938, '39a, b, '41, '50) teilt ich mit, dass in Japan drei Varietäten von Dumortiera hirsuta mit Chromosomenzahlen 9, 18 und 27 gefundan, und dass die Verbreitung dieser Varietäten in engem Zusammenhang mit der geologischen Formation steht.
In der voligen Arbeit untersuchte ich die I3eziehung zwischen der Verbreitung der Varietäten von D. hirsuta und der geologischen Formation in Formosa U. Liukiu Inseln. Die Ergebnisse wie folgenden:
1). Die monoploide Varietät wurde nur an die Kalkgebiete Taroko in der Provinz Karenko und zwar auf die zwei Arten von kalkhaltigen Gesteinen (Kalkstein u. Kalkquartzschiefer) gefunden. Die diploide Varietät wurde in Formosa u. Liukiu und zwar auf 6 Arten von Gesteinen vorkommen. Daher kann die Varietät mit mehr Chromosomen auf verschiedenen Gesteinen wachsen und weitere. Verbreitungsgebiete haben als die Varietät mit weniger Chromosomen.
2). Jede der diploiden und triploiden Varietäten hat ihr eigenes Verbreitungsgebiet die erstere sind weit im Süden von der Insel Amamioshima, während die letztere im Norden von der Insel Yakushiina verbreitet. Daher bildet die Tokara-Meerenge die Grenze zwischen den Verbreitungsgebieten beider Varietaten.View full abstractDownload PDF (754K) -
Yoshitomo Nozu1950 Volume 63 Issue 745-746 Pages 131-138
Published: 1950
Released on J-STAGE: January 26, 2011
JOURNAL FREE ACCESS1. Morphological and anatomical studies have been made on. twenty five species of the Hymenophyllaceae, which belong to nine genera of Copeland's new classication (1938), i. e., four species of Vandenboschia, one Pleuromanes, one Gonocormus, two Crepidomanes, one Crepidopteris, one Scledodesmium, and Hymenophyllum, ten Mecodium and four Meringium (c. f. Table on Page 135).
2. In the species studied, the stele of root exhibits either monarch or diarch type. Each arch consists of one or two tracheids in Hymenophyllum, Mecodium and Meringlum, while several in other genera.
3. The stelar type in rhizome and petiole is apparently a special case of the protostele the “Protostelischer Hymenophyllaceen-Typus” (Ogura, 1933). Considering degree of reduction of the. xylem mass, however, the stelar type in both organs can be divided into three types, that is, Trichomanes, Hymenophyllum and Gonocormus types, the second being further subdivided into Mecodium and Meringium subtypes.
4. In previous paper (1948) the writer observed thirteen species of the Hymenophyllaceae and proved that manner of branching of axillary bud exhibits two types, that is, Trichomanes and Hymenophyllum types, the latter being also subdivided into Mecodium and Meringium subtypes.
5. The facts presented by the stelar type in root, rhizome and petiole, forms of hairs, branching of nerves, condition of wings, as well as the manner of branching of axillary bud suggests that classification of genera by Copeland seems too minute, and that Stokey's opinion (1948) based on the studies on the reproductive organs of gametophytes may be rather reasonable.
6. It. seems better to suggest that the more advanced members of the family are those exhibited by the Trichomanes and Hymenophyllum types.View full abstractDownload PDF (1505K) -
Cubic System of Classification of the Genus Cymbopogon (Gramineae) by the Constituents of Essential OilsYasuji Fujita1950 Volume 63 Issue 745-746 Pages 139-147
Published: 1950
Released on J-STAGE: January 26, 2011
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1950 Volume 63 Issue 745-746 Pages 138,148-
Published: 1950
Released on J-STAGE: February 20, 2024
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Makoto NUMATA1950 Volume 63 Issue 745-746 Pages 149-154
Published: 1950
Released on J-STAGE: January 26, 2011
JOURNAL FREE ACCESS1) I investigated the quantitative method analysing vegetation according to the theory of small samples.
2) It is recognized by most investigators that we ought to use the random sampling in our field survey, but we often based its method on subjective randomizaton.
3) Sampling error is controlled by vegetational homogeneity and sampling ratio. And I could not compare several sampling methods by means of sampling error.
4) The best stratification is the worst clusterization. Those order is expressed by coefficient of interclass correlation (ρ') and also the quality of sampling method is decided by the coefficient.
5) The stratification by means of a dominant does not coincide with the one by means of the whole physiognomy.The latter is better.
6) The significance of difference between several sampling methods is indicated by analysis of variance.Relative number of sampling units required for a given accuracy according to samling methods is calculated from average comparable variance.View full abstractDownload PDF (844K) -
Makoto OMURA1950 Volume 63 Issue 745-746 Pages 155-160
Published: 1950
Released on J-STAGE: January 26, 2011
JOURNAL FREE ACCESSThe writer investigated actually and studied synoecologically, about a year up to March 1950, the societies of epiphytic Lichens in the forests of the Shiia Sieboldi-Bladhia japonica and the Machilus Thunbergii-Rumohra aristata association (warm temperate forests) on the southern part of Idu Peninsula and in those of the Fagus crenata-Sasamorpha purpurascens association (temperate forests) and the Abies Veichii, the Abies Mariesii and the Tsuga diversifolia consociation (subalpine forests) on the Titibu mountainous region in the Saitama Prefecture and in those of the Faguscrenata-Sasa kulirensis association (temperate forests) on the Iide mountainous region in the Hukusima Prefecture.
Carrying out the synoecological studies on the societies of epiphytic Lichens, he grouped the epiphytic lichens, from the viewpoint of physiognomy, into the following 12 life-forms for the first time (see the text figure), taking chiefly their external appearances and the conditions of attachment into consideration.View full abstractDownload PDF (855K) -
1950 Volume 63 Issue 745-746 Pages 160-
Published: 1950
Released on J-STAGE: February 20, 2024
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1950 Volume 63 Issue 745-746 Pages 161-162
Published: 1950
Released on J-STAGE: February 20, 2024
JOURNAL FREE ACCESSDownload PDF (232K)
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