植物学雑誌
Online ISSN : 2185-3835
Print ISSN : 0006-808X
ISSN-L : 0006-808X
83 巻 , 984 号
選択された号の論文の5件中1~5を表示しています
  • Nariyuki ISHIKURA, Mannen SHIBATA
    1970 年 83 巻 984 号 p. 179-183
    発行日: 1970年
    公開日: 2006/10/31
    ジャーナル フリー
    The ripe berries of Cayratia japonica get a dark purple color in late autumn. It was shown paper-chromatographically that their pericarp contains a single anthocyanin, which was obtained in an amorphous state. The pigment was an acylated anthocyanin which was degraded into three components, delphinidin, glucose and p-coumaric acid, by complete acid hydrolysis. The deacylated anthocyanin was different from each of the known delphinidin glucosides such as 3-monoglucoside, delphin (3, 5-diglucoside) and eichhornin (3-diglucoside). This new anthocyanin, cayratinin, has proved to be delphinidin 3-p-coumaroylsophorosid-5-monoglucoside by the analytical procedures of oxidative degradation with hydrogen peroxide, partial hydrolysis with dilute acid, and u. v. absorption spectrophotometry.
    Besides, eichhornin which was previously described as delphinidin 3-diglucoside was shown to be 3-gentiobioside in the present experiment.
  • von Tetsuo KOYAMA
    1970 年 83 巻 984 号 p. 184-192
    発行日: 1970年
    公開日: 2006/10/31
    ジャーナル フリー
    Ten species of the Cyperaceae from Ceylon were taxonomically discussed as a part of preliminary revision of the family toward a new Flora of Ceylon. The genera included in this treatment are: Cyperus, Carex, Fimbristylis and Hypolytrum. The two new species proposed are: Carex lankana and Fimbristylis zeylanica, Taxonomic discussions were made with a special emphasis in referring to the specimens housed in the Peradeniya Herbarium (PDA). In spite of richness in type and other important historical collections the specimens in Peradeniya have never been critically examined since Trimen's Handbook (1893-1900).
  • 岡崎 恵視, 猪川 倫好, 古谷 庫造, 西沢 一俊, 三輪 知雄
    1970 年 83 巻 984 号 p. 193-201
    発行日: 1970年
    公開日: 2006/10/31
    ジャーナル フリー
    Fronds of a calcareous red alga Serraticardia maxima were cultured in the sea water containing H14CO3- or both H14CO3- and 45Ca++ in the ight and in the dark, and radioactivities incorporated into calcium carbonate deposited were determined. It was found that the rate of calcium carbonate deposition was accelerated in the light to an extent of 2-4times as that in the dark. On the basis of the data from pyruvate-U-14C infiltration experiment and from measurement of the respiration rate of algal fronds, carbon dioxide originated from the respiration was found to contribute rather slightly to calcium carbonate deposition. Most of the carbon of calcium carbonate was derived from carbonic ions in sea water. An exchange reaction between the calcium carbonate deposited and the calcium and carbonic ion in sea water was observed in both intact and boiled fronds. It was found that the exchange reaction is much higher in the latter than in the former.
  • 辰野 誠次, 岡田 博
    1970 年 83 巻 984 号 p. 202-210
    発行日: 1970年
    公開日: 2006/10/31
    ジャーナル フリー
    1) 本研究ではオシダ科5属7種の核学的研究が行なわれた. その体細胞における染色体数は次のごとくである.Matteuccia orientalis イヌガンソク 2n=80
    Athyrium niponicum イヌワラビ 2n=80
    Woodsia polystichoides イワデンダ 2n=82
    Diplazim esculentum クワレシダ 2n=82
    D. wichurae ノコギリシダ 2n=82
    D.dilatatum ヒロバノコギリシダ 2n=82, 123
    Diplaziopsis cavaleriana イワヤシダ
    2n=164
    このうちイワヤシダの染色体数は初めて明らかにされたものである. また, ヒロバノコギリシダでは2n=82, 123 の染色体数をもつ個体が発見され, 本種には種内倍数性があることがわかった.
    2) ヘラシダ属の2種 (クワレシダ, ノコギリシダ), クサソテツ属の1種 (イヌガンソク) では核型がA-Fの6型から成り, そのうちA-E型は各2組ずつに再分され計11組から成るので, 原始基本数は b=11 と考えられる. この b=11 は b=12 から由来したことが核型分析から推定された.
    3) 核型分析された3種は b=11 の8倍性起原の植物と考えられる. そのうち, ヘラシダ属の2種(2n=82) は異質染色体 (H)を6本, クサソテツ属のイヌガンソク (2n=80) は8本欠くことによって現在の染色体数になったものであろう.
  • 村上 浩
    1970 年 83 巻 984 号 p. 211-213
    発行日: 1970年
    公開日: 2006/10/31
    ジャーナル フリー
feedback
Top