Japanese Journal of Crop Science
Online ISSN : 1349-0990
Print ISSN : 0011-1848
ISSN-L : 0011-1848
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Volume 4, Issue 4
Displaying 1-8 of 8 articles from this issue
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  • The Differences in Peroxidase Activity of the Species of Cotton Plant
    Sadawo NAKATOMI
    1932 Volume 4 Issue 4 Pages 295-303
    Published: December 15, 1932
    Released on J-STAGE: February 14, 2008
    DOIhttps://doi.org/10.1626/jcs.4.295
    JOURNAL FREE ACCESS
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  • Meiotic Mitosis in Hordeum Sativum
    Choyo INOUYE
    1932 Volume 4 Issue 4 Pages 304-314
    Published: December 15, 1932
    Released on J-STAGE: February 14, 2008
    DOIhttps://doi.org/10.1626/jcs.4.304
    JOURNAL FREE ACCESS
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    1. The material used in this investigation is the pollen mother cells of Hordeum sativum of two rowed and six rowed varieties. These were fixed in BOUIN's solution and stained in HEIDENHAIN'S iron-alumhaematoxylin. 2. With the beginning of the nuclear division, the nuclear contents contracts and separates from the nuclear membrane to form the synizesis stage (Fig. 2). Perhaps this contraction of the nuclear contents is due to the concentration of the spireme at the pole of the nucleolus. 3. At the end of the synizesis stage the contracted threads begin to expand again in the nuclear cavity (Fig. 3) and gradually become arranged in the pairs which are characteristic of the zygotene stage (Fig. 4). During this stage, however, the pairing threads draw closer together until they seem to have united and enters the pachytene stage (Fig. 5). 4. At the late pachytene stage the spireme seems gradually to lose its chromatin, until all the spireme becomes nearly colourless and enters the achromatene stage (Fig. 6). 5. After the achromatene stage, chromatin gradually begins to reappear on the achromatic spireme. At about the same time, however, the spireme begins to split into two threads and enters the diplotene stage (Figs. 7 and 8). From these facts it appears that the achromatene stage is a necessary preliminary to the resolution of the spireme in to two threads. 6. During the first telophase, the nucleolus is formed from the chromatin of the chromosomes, which concentrates gradually to form a mass of spherical shape, while the chromosomes which have thus lost most of their chromatin become the spireme of the interkinesis (Figs. 16 and 17). But, during the second prophase, the spireme seems to reform the chromosomes, gradually receiving chromatin from the nucleolus (Figs. 18 and 19). Again in the second telophase, the opposite movements takes place, as the chromatin of the chromosomes apparently concentrates to form the nucleolus (Figs. 24 and 25). These facts indicate that the nucleolus contains the material of the chromosomes.
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  • Cytological Studies in Colocassia : Preliminary report
    Yishinori MAYEDE
    1932 Volume 4 Issue 4 Pages 315-318
    Published: December 15, 1932
    Released on J-STAGE: February 14, 2008
    DOIhttps://doi.org/10.1626/jcs.4.315
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    1. The material used in this investigation is as follows. Pollen mother cells (Colocasia antiquorum, SCHOTT) Root tip cells (Colocasia antiquorum. SCHOTT) Root tip cells (Colocasia gigantea. HOOK f'.) These were fixed in BOUINA'S solution and stained with HEIDENHAIN'S iron-alum-haematoxylin. 2. The haploid number of the chromosomes of Colocasia antiquorum is fourteen (Fig. 1). Tha diploid number of the chromosomes of Colocasia antiquorum and Colocasia gigantea is twenty eight (Gigs. 2 and 3). 3. During the meiotic cell division in Colocasia antiquorum lagging chromosomes are observed and, very often, pollens with many nucleoli are formed. The sterility of this plant may be due to the irregular meiosis.
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  • Chromosome Number of Thea Sinensis
    Hidetsune OHNO
    1932 Volume 4 Issue 4 Pages 319-321
    Published: December 15, 1932
    Released on J-STAGE: February 14, 2008
    DOIhttps://doi.org/10.1626/jcs.4.319
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    The haploid number of the chromosomes in Thea sinensis is fifteen as already found by COHEN STUART (1926) and MORINAGA (1929) According to this investigation the diploid number of the chromosomes of this plant is thirty.
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  • Productivity of Certain Varieties of Barley Plant as Accomodated by Different Methods of Cultivation : A Preliminary report
    Koreyoshi KAWAMATA, Toshinori HASHIGUCHI
    1932 Volume 4 Issue 4 Pages 322-326
    Published: December 15, 1932
    Released on J-STAGE: February 14, 2008
    DOIhttps://doi.org/10.1626/jcs.4.322
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  • Diurnal Variations of Moisture Content, Weight and Volume of Unhulled Rice Grains
    Tamotsu OKAMURA
    1932 Volume 4 Issue 4 Pages 327-336
    Published: December 15, 1932
    Released on J-STAGE: February 14, 2008
    DOIhttps://doi.org/10.1626/jcs.4.327
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  • Investigations of the Effect of Cutting of Tops on the Growth and Yield of Rice Plant
    Mitsuwo SUGIMOTO
    1932 Volume 4 Issue 4 Pages 337-359
    Published: December 15, 1932
    Released on J-STAGE: February 14, 2008
    DOIhttps://doi.org/10.1626/jcs.4.337
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  • Crops and Civilization
    Suketeru KIKKAWA
    1932 Volume 4 Issue 4 Pages 360-363
    Published: December 15, 1932
    Released on J-STAGE: February 14, 2008
    DOIhttps://doi.org/10.1626/jcs.4.360
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