Journal of the Japanese Society for Horticultural Science
Online ISSN : 1880-358X
Print ISSN : 0013-7626
ISSN-L : 0013-7626
Volume 15 , Issue 2-4
Showing 1-15 articles out of 15 articles from the selected issue
  • [in Japanese], [in Japanese], [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 101-108
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese], [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 109-116
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese], [in Japanese], [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 117-134
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese], [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 135-142
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 143-145
    Published: 1944
    Released: December 19, 2008
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  • T. TATEBE
    1944 Volume 15 Issue 2-4 Pages 146-161
    Published: 1944
    Released: December 19, 2008
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    I Solanum integrifoloium POIR. ×S. Melongena L.
    1. A hyprid was obtained by crossing between Solanum integrifolium and S. Melongena, but the reciprocal crossing was unsuccessful.
    2. The F1 hybrid is distinctly more vigorous than either parental form. It shows a greater resemblance to S. integrifolium than to S. Melongena, except that the purple plant color of S. Melongena is dominant over the green of S. integrifolium.
    3. Under normal conditions the hybrid produces numerous short swigging roots on the lower part of the shoot, like in Lycopersicum esculentum. However the writer has never seen this characteristic in the parental forms.
    4. Although flowering profusely, the hybrid was proved to be almost completely male sterile, producing a few emptied pollen grains in the anther. Likewise the ovules are almost completely sterile.
    5. After about the middle of September, small seedless fruits are produced. It seems pro-bable that the ovaries of the hybrid grow into parthenocarpic fruits owing to the growth in-hibiting action of the lower temperature in the season.
    6. As already known, the haploid chromosome number was observed to be 12 in both S. integrifolium and S. Melongena. The meiosis in PMC of the hybrid shows no irregularities up to the liberation of the microspores from the tetrad (Fig. 2-10). Following liberation the mi-crospores begin to disintegrate and the majority of them entirely degenerates, until a few abortive pollen grains are found in the anther (Fig., 11-17, 18, and 19-21).
    7. In the 1934 to 1940 season it was proved that the F, hybrid produces extremely few seeds under favorable conditions.
    8, In the later generations (F2-F4), both the S. integrifolium-like plants and the F1 hybri-d-like plants are recovered, but no plants which resembled S. Melongena are secured
    9. The progenies show the considerable variation in fertility ranging from complete ste-rility to complete fertility. The degeneration of pollen grains is brought about by the same process as that of the F1 hybrid.
    10. A few abnormal plants appeared in the later generations of the hybrid. The plants.are very dwarfed (about 40 cm in height) and less vigorous than their normal plants, anfl pro-duce no fruits, whatever. At first it was expected that they were likely abnormal plants, ha-ving aberrant chromosome numbers. While cytological study proved that this expectation is not the case, but the dwarf plants are also diploid.
    II Solanum Melongena L.×S. ovigeruin DUN.
    The F1 hybrid of Solanum Melongena with S. ovigeruin is completely fertile. The haploid ch-romosome number of S. ovigerum is 12, as already known. The meiosis in PMC of the hybrid
    is perfectly normal (Fig. 25-26). In the variety of S. Melongena used in the experiment the skin color of fruit is dark purple and the flesh color of fruit is light green. In S. ovigerum, on the other hand, both skin color and flesh color are white. The F1 is dark purple skin (light greenflesh), and the F2 is in the ratio 9 dark park purple skin (light green flesh): 3 violet skin (white flesh): 3 green skin (light green flesh): 1 white skin (white flesh). In this-case the genetic behavior of the hybrid was proved to be similar to the inter-varietal hybrids of S. Melongena.
    III Solanum integrifoli'um Pore.×S. ovigerum Dun.
    The hybrid between S. integrifoliuin and ovigerum shows a general similarity in behavior to the hybrid between S. integrifolium and S. Melongena. Hence no great detail will be gone into in the present description. (Ibaraki-tyo, Mishima-gun, Osaka-hu, Nippon)
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  • [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 162-163
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 164-183
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese], [in Japanese], [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 184-200
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese], [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 201-230
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 231-241
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 242-253
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 254-261
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 262-265
    Published: 1944
    Released: December 19, 2008
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  • [in Japanese]
    1944 Volume 15 Issue 2-4 Pages 266-270
    Published: 1944
    Released: December 19, 2008
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