植物学雑誌
Online ISSN : 2185-3835
Print ISSN : 0006-808X
ISSN-L : 0006-808X
44 巻 , 519 号
選択された号の論文の7件中1~7を表示しています
  • Hiroshi Tamiya, Shinkichi Morita
    1930 年 44 巻 519 号 p. 139-150
    発行日: 1930年
    公開日: 2011/01/26
    ジャーナル フリー
  • Tokutaro Ito
    1930 年 44 巻 519 号 p. 151-157
    発行日: 1930年
    公開日: 2011/01/26
    ジャーナル フリー
  • Tadao Jimbo
    1930 年 44 巻 519 号 p. 158-168
    発行日: 1930年
    公開日: 2011/01/26
    ジャーナル フリー
    著者ハ、ふぢ (Wistaria floribunda DC.)、やまふち (Wistaria brachybotrys Sieb. et Zucc.)、しらふぢ (Wistaria venusta Rehder et Wilson) 及ビはりゑんじゆ (Robinia pseudacacia L.) ノ根瘤細菌ノ純粋培養二十一個ニ就キテ、其ノ中十四ヲ冤疫元トセル冤疫血清ヲ製シ、凝集反應ニ依リテ、血清學的ニ共等相互ノ親縁關係ヲ攻究セリ。
    其ノ結果、原則トシテ、(一) 同一ノ植物種ニ於テモ個體ニヨリテ屡其ノ根瘤細菌ガ血清學的ニ異種ナルコトアリ、(二) 種ヲ異ニスル植物個體ノ間ニ於テ却テ其ノ根瘤細菌ガ血清學的ニ同一種ナルコトアリ、又 (三) 同一ノ植物個體ニ於テモ根瘤ニヨリテ血清學上異ナル種類ノ細菌ガ存在スルコトアルヲ認メタリ。此ハ既ニStevns.大河原及ビ吉田諸氏ノ研究ニ依リテ知ラレクル所ニシテ、本研究ニ於テ之ヲ別種ノ材料ヲ用ヒテ確證スルコトヲ得タル次第ナリ。
  • 小野 知夫
    1930 年 44 巻 519 号 p. 168-176
    発行日: 1930年
    公開日: 2011/01/26
    ジャーナル フリー
    The intersexual plant of R. Acetosa generally bears flowers of three types, namely male, female and bisexual ones. The male and female flowers are morphologically normal, but the bisexual ones sometimes show various grades of degeneration (Fig. 1-6). Numbers of these different flowers in each plant are variable and usually female flowers are few or absent. Accordingly we have determined the degrees of intersexuality in each plant by calculating the percentage of bisexual flowers.
    The chromosome numbers of 50 different individuals in various grades of intersexuality are denoted in the following table:
    It is pecuriar that some diploid individuals show a low intersexuality. The chromosomal elements of such individuals, however, appear similar to that of the male plant (Fig. 7-10).
    Some intersexual plants of R. Acetosa are fertile. I have obtained many progenies. Among the progenies of triploid intersexual plants, 15-, 16- and 20-chromosomal individuals were found (Fig. 11). Further investigations of these progenies will be reported later.
    VII. Chromosomes of R. montanus.
    The numbers of diploid chromosomes in female, male and intersexual plants of R. montanus were determined respectively to be 14, 15 and 22. The behavior of chromosomal elements is quite identical with that in the case of R. Acetosa (Fig. 12-14). Therefore the chromosomal formulae of these plants should perhaps be as follows:-_??_14=12a+2X _??_15=12a+X+2Y _??_22=18a+2X+2Y
    VIII. Chromosomes of an intersexual plant of R. acetosella.
    This summer (1929) I collected some fertile intersexual plants of R. acetosella from two different places in South Saghalien. One of them was fixed and studied cytologically. In the heterotypic nuclear division in pollen mother cells we found 20 bivalents and one univalent (Fig. 15). Some bivalents associate with each other and form one or more tetrapartite ring-complexes (Fig. 16). In the anaphase, the univalent goes freely to one pole. Therefore the daughter plates have usually 21 and 20 chromosomes (Fig. 17, 18). We are not yet sure whether all the intersexual plants of R. acetosella have 41 chromosomes or not.
  • 竹中 要
    1930 年 44 巻 519 号 p. 176-184
    発行日: 1930年
    公開日: 2011/01/26
    ジャーナル フリー
    1. The diploid number of chromosomes in the male plant of Rumex monlanus DESF. is 15 and that of the female 14 as in Rumex acelosa L. Of the 15 chromosomes in the male plant, 12 are autosorties and the remaining 3 sex chromosomes, and of the 14 chromosomes in the female, 12 are autosomes and the rest sex chromosomes. The two sex chromosomes in the somatic division of the female plant are V-shaped (X-chromosomes) and among the three sex chromosomes in the male plant, one is V-shaped (X-chromosome) while the two are J-shaped (Y1 and Y2-chromosomes): The latter are smaller than the X-chromosome but larger than any of the autosomes.
    2. At the heterotypic metaphase in the pollen-mother-cell, 6 gemini and one tripartite chromosome are observed, and at the heterotypic anaphase, the median (X-chromosome) of the tripartite chromosome goes to the one pole and the terminal ones (Y1 and Y2-chromosomes) to the other, as in the case of R. aceiosa L. Sometimes one or two of the 6 gemini form the chromosome-bridge at the heterotypic anaphase but the tripartite chromosome has no connection with it.
    3. Such three sex chromosomes (X, Y1 and Y2-chromosomes) have each a remarkable constriction and actual separation from the point of constriction often takes place. Acoordingly, chromosome numbers larger than the usual are to be found at the metaphase of mitosis in young pollen-grains and root-tip-cells. In Lapathum, a sub-genus of Rumex, haploid chromosome numbers are 10, 20, 30, 40, 50, 60 and 100 but in the sub genus Aceiosa they are 7, (8), 9, 10 and 21 (KIHARA and ONO, 1926; ONO, 1928); that is to say, the former sub-genus shows polyploidy while the latter does not. Thus an interesting relation between the remarkable constriction of sex chromosomes and non-polyploidy may be suggested.
    4. Considerably larger young pollen-grains are often observed among the anormal ones. The ratio of the volume of these larger grains and normal ones is 2.5: 1. These larger grains are supposed to have the diploid chromosome-number caused by imperfect heterotypic or homotypic division of the pollen-mother-cell, and may have a certain significance in the origin of the polyploid plants.
  • 1930 年 44 巻 519 号 p. 191-203
    発行日: 1930年
    公開日: 2011/01/26
    ジャーナル フリー
  • 1930 年 44 巻 519 号 p. 204
    発行日: 1930年
    公開日: 2011/01/26
    ジャーナル フリー
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