グラジオラスのBlindに関する研究(第5報) : 日長がグラジオラス花芽のauxin levelに及ぼす影響
スポンサーリンク
概要
- 論文の詳細を見る
Many studies on the physiology of flowering clari-fied that the flowering in short-day plants may be controlled by the application of plant growth regulating substances, the so-called “auxin” or “antiauxin”. It is recognized in the gladiolus culture that the .short day promotes the flowering slightly, but ex-treme short day causes the blindness. It is supposed that the application of growth regulating substance is effective to decrease the number of blindness in gladiolus, For the first step of the study from the point of view mentioned above, the experiments were conducted to know the auxin level in the flower buds of gladiolus which had been held under long photoperiods (24 hours) and short photoperiods (8 hours). The variety used was “Spotlight”. The average-weight of corms which had been grown at Ueno in Mie prefecture was 26. 5g. The corms were plant-ed in the experimental farm of Kyoto University on August 27, 1958. Shading and lighting were made from October 10 to November 6, 1958. Sampl-ings were made at one-week intervals during the .course of the experiments and the avena tests were mad eon each sample. Avena sativa, variety Victory grown at Hokkaido University was used for the .curvature test. And the diffusion method, in which 3 hours diffusion was made at 25°C, was employed for the test. Beside avena test, anatomical obser-vations were made. The results obtained were summarized as follows: 1. Two weeks after the start of treatment, it -was observed that the length of flower spikes in short-day plot was getting shorter than that in long-day plot, nevertheless no difference was observ-ed between long-day and short-day plots on height of plants, number of leaves, and length of stems. And the difference in length of spike increased gradually as the time progressed. Finally, the blindness occurred in short-day plot, four weeks after the start of treatment. 2. The value of avena test with the plants under short-day condition was smaller than that under long-day condition two weeks after the start of treatment. And as the time progressed, the difference in the measurement values between long-day and short-day plots became greater. Finally, few avenas were curved with the plants under short-day. 3. Anatomical observations showed that the death of cells appeared at the top of the flower spike in three week treatments of short-day. Then the death of cells advanced downwards with the succeed-ing of treatment. The perfect death of flower spike was observed in the samples taken from the plants treated with four week short photoperiods. The archesporium formation was observed in the flower buds that died at their most developed stage. 4. From the results mentioned above, it seems that the gladiolus under short-day condition results in the decrease in auxin content in the flower buds, and consequently shows the blindness. 5. Anatomical studies showed that the flower buds, which had reached to the tetrard stage at the end of four week short-day treatments, were not damaged.
- 園芸学会の論文
著者
関連論文
- 輸出グラジオラスの繁殖に関する研究 : II 植付時期及び仔球の大きさが球茎生産に及ぼす影響について
- キキョウの促成におよぼすジベレリンと低温の効果
- グラジオラスのBlindに関する研究 : XI 品種による反応差について
- 花木類の花芽分化に関する研究 : VII アジサイの花芽分化期並びに花芽の発育経過について
- シクラメンの研究 (第1報) : 種子の発芽に関する2,3の実験
- グラジオラスの球茎生産に及ぼす除草剤の影響,特に施用の時期及び回数並びに薬剤の組合わせについて
- 輸出グラジオラスの繁殖に関する研究 : I 日長がグラジオラスの球茎並びに仔球の形成に及ぼす影響について
- チューベローズの花芽分化並びに花芽の発育過程について
- シランの花芽分化とその促成に及ぼすジベレリンの影響
- グラジオラスのBlindに関する研究 (第9報) : 窒素の施用がグラジオラス花芽のauxin含量に及ぼす影響
- グラジオラスのBlindに関する研究(第10報) : 土壌湿度がグラジオラスの生育,開花ならびにBlind発生におよぼす影響について
- グラジオラスのBlindに関する研究 (第8報) : 木子に対する肥料処理が開花ならびにBlind発生に及ぼす影響
- グラジオラスのBlindに関する研究所 (第6報) : 肥料処理ガグラジオラスの開花におよぼす影響
- グラジオラスのBlindに関する研究 (第7報) : 前年度の肥料処理が次年度の開花に及ぼす影響
- グラジオラスのBlindに関する研究(第5報) : 日長がグラジオラス花芽のauxin levelに及ぼす影響
- キキョウの花芽分化に関する研究(第2報) : 温度及び日長がキキョウの花芽分化並びに開花に及ぼす影響
- グラジオラスのBlindに関する研究 : IV 摘葉並びに日射量制限がグラジオラスの開花に及ぼす影響
- 花木類の花芽分化に関する研究(第6報) : コリンクチナシ,ヤエクチナシ及びハクモクレンの花芽分化期並びに花芽の発育経過について
- フリージアの花芽分化に関する研究(第3報) : 日長がフリージアの花芽分化並びに開花に及ぼす影響