植物学雑誌
Online ISSN : 2185-3835
Print ISSN : 0006-808X
ISSN-L : 0006-808X
53 巻 , 636 号
選択された号の論文の5件中1~5を表示しています
  • Kono Yasui, Nobuhide Suita
    1939 年 53 巻 636 号 p. 521-524
    発行日: 1939年
    公開日: 2007/05/24
    ジャーナル フリー
  • Tadayoshi Tazaki
    1939 年 53 巻 636 号 p. 524-533
    発行日: 1939年
    公開日: 2007/05/24
    ジャーナル フリー
    1. Calcium concentration of recretion sap was nearly constant in certain range of the concentration of KNOP'S solution. When the nutrient solution became diluted, the calcium concentration in the recretion sap suddenly fell. When the nutrient solution became concentrated, the concentration of calcium in the recretion sap also rised. The calcium concentration in the exudation sap was lower than that of the nutrient solution when the nutrient solution was comparatively concentrated and higher when the nutrient solution was comparatively diluted.
    2. The amount of calcium exuded per hour was almost constant in certain range of KNOP'S solution and diminished in the low concentration of calcium in the nutrient solution.
    3. The volume of exudation sap per hour was almost constant in certain range of KNOP'S solution and diminished when the nutrient solution was more concentrated than natural KNOP'S solution or more diluted than 1/8-KNOP'S solution.
    4. When the nutrient solution was simple KH2PO4 solution, recretion ceased when the solution became more concentrated than 0.075%. As the concentration of salt in KNOP'S solution is much higher than this, it seems that recretion has not necessarily to do with the sum of the concentration of salts in the case of KNOP'S solution.
    5. The relation between the potassium concentration in the exudation sap and the nutrient solution showed equal tendency with calcium. But it must be noted that the potassium concentration was higher than that of calcium. The amount of potassium exuded per hour was not constant in some range of KNOP'S solution as calcium, but decreased as the concentration of nutrient solution became diluted. In individual plants, the variation of the concentration of calcium and potassium took equal tendency.
    6. In soil-cultured plants, the recretion was more vigorous in comparison with that of the water-cultured plants.
    7. From the results obtained in Colocasia, the absorption of salts seems not to take place in epithem.
    8. The concentration of calcium and potassium was not always low but often high when the volume of exudation sap was great. So great amount of calcium and potassium was excreted in strong recretion. The subject for investigation was suggested by Prof. Dr. H. NAKANO, to whom I wish to tender my best thanks for his kind directions.
  • 秋山 茂雄
    1939 年 53 巻 636 号 p. 534-540
    発行日: 1939年
    公開日: 2007/05/24
    ジャーナル フリー
    1. Remarks on the anatomical characteristics of the three species of Carices described in this paper are shown as below.
    Carex Rochebruni FRANCH, et SAV.: Upper epidermal cells are large. Protuberances occur in the upper epidermis near the margins. Upper epidermal cells on the nerve are quite similar to those on the mesophyll.
    Carex stipata MUEHL.: All epidermal cells are large and have conspicuously wavy cell-walls. Protuberances are found in the upper epidermis on the nerve. Spine cells and protuberances are densely distributed in the margins.
    Carex tenuiflora WAHL.: Protuberances are widely distributed in the upper epidermis on the nerve, in all the cells of the under epidermis and in the margins. Subsidiary cells of the stomata are narrow.
    2. Nineteen species hitherto described in five papers published presiously to this, and eight species belonging to Canescentes and Macroce- phalae formerly described, belong to the Subgenus Vignea. Those have not the common critical characters in the leaf-structures to authorize their being grouped as a subgenus, and this fact seems to the writer to suggest that the subgenera of the Carices formerly established should be more fully examined.
  • 小倉 謙
    1939 年 53 巻 636 号 p. 540-548
    発行日: 1939年
    公開日: 2007/05/24
    ジャーナル フリー
    1. ひろはのみゝもちしだハ外觀上多少ノ變異ヲ示スモノナルガ内部構造上ニ於テモ變異性ヲ示ス (みゝもちしだモ然ラン)。例ヘバ
    a) 髓走條ハソノ下端ガ髓中ニ獨立ニ起ルコト, 莖中心柱ノ内面ヨリ分離シテ生ズルコトアリ, 又上端ハ葉隙閉鎖ニ携ハルコト, ソノ儘髓中ニ終ルコトアリ。
    b) 葉柄基部ニ於ケル維管束ノ排列ハ可成リ異型ヲ示シ, 時ニ著シキ不規則ヲ示ス。
    2. ひろはのみゝもちしだニ於テ, 從來本種或ハみゝもちしだニ於テ知ラレザリシ事實ヲ認メタルコト次ノ如シ。
    a) 根莖面及葉柄基部ニ於ケル鱗毛ニ著シキ差異ノアル三型ヲ認ム。
    b) 葉柄基部ニ各一個ノ不定芽ヲ認ム。
    3. みゝもちしだ屬ノ中心柱系ニツキ次ノ見解ヲ得タリ。
    a) 莖中心柱系ハへご型ニ類スレドモ髓走條ノ行動ニヨリ之ト區別シテ “みゝもちしだ型” ヲ設ケテ之ニ編入スベシ。
    b) 葉柄中心柱系ハサッコロマ型ニ類スレドモ, 左右ノ列ガ正中線ニテ癒合シ且ツ基部ノ複雜ナル構造ニヨリ之ト區別シテ “みゝもちしだ型” ヲ設ケテ之ニ編入スベシ。
  • 小野 知夫
    1939 年 53 巻 636 号 p. 549-556
    発行日: 1939年
    公開日: 2007/05/24
    ジャーナル フリー
    1) Melandrium ノ種子及ビ芽生ノコルヒチン處理ニヨリ雌及ビ雄ノ四倍性植物ヲ得タ。コレ等植物ノ種々ノ器官, 花粉粒, 〓果ノ大サ, 〓齒ノ數等ハ正常ノ二倍體ニ比シ増大シ, 倍數體トシテノ特徴ヲ示ス。
    2) 四倍體雄ノ減數分裂ニ際シ性染色體 XXYY ハ2個ノ獨立シタ X-X 及ビY-Y 對或ハ1個ノ Y-X-X-Y ノ四連結合ヲナス。II 價接合ヲナス場合 X-Y 對ノ如キ不等對ハ發見サレナカツタ。分離ニ際シコレ等性染色體要素ハ Fig. 5 ニ示ス如キ種々ナ形式ヲトルガ, ソノ頻度カラ見テ90%以上ハ XY-XY ノ均等分離ガ起ル。
    3) 性染色體 X 及ビ Y ハ略中央ニ狹窄ヲ有シ, 常染色體ノ何レヨリモ大形デアル。而シテ X ハ Y ニ比シ小サクソノ長サノ比ハ約 10:13 ニ相當スル。
    4) 4x×4x, 4x×2x 及ビソノ逆交雜ノ結果, 次代植物ニ XXXY+4A, XXX+3A,XXY+3A ノ如キ四倍體及ビ三倍體ト種々ノ染色體組合セヲ有スル異數體トヲ得タ。コレ等ノ植物ト性ノ關係ニ就イテ追ツテハ報告スル。
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