葉たばこのニコチン含量に及ぼす蒸散抑制剤の影響
スポンサーリンク
概要
- 論文の詳細を見る
The experiments conducted up to the present day revealed that spraying on the leaves of field-grown tobacco with a solution of transpiration suppressants resulted in the advancement of leaf quality and reduction of nicotine content. The nicotine content in the sprayed leaves is estimated 10-30% lower than that in the non-sprayed ones. Following experiments were con-ducted to find out the cause of the reduction of nicotine content. The leaves of tobacco grown on the field were primed at different 3 ripe stages : immature, mature and overmature stage : after upper and lower surfaces of a half of the leaves Were sprayed immediately after the topping with a solution of a transpiration suppressant. Comparison of nicotine content between the fresh and dry leaves of the non-sprayed and the sprayed leaves showed that the reduction of nicotine content chiefly occured after the leaves attained to mature stage. The reduction of nicotine content in the mature leaves could be detected not only in the sprayed leaves but also in the non-sprayed ones. It is a well known fact in Japan that mulberry leaves which have been stained by evaporated nicotine from the neighboring tobacco field often gives a poisonous influence on the silkworm. The next experiment indicated that, in the leaves which had been kept in N_2, much loss of nicotine occurred during the incubation period or after drying of the leaves, whereas, in the other leaves treated with O_2, only slight decrease could be detected. The author ascertained, in the other experiment, that the leaves which had been kept in CO_2 exhibited higher free nicotine to total nicotine ratio than those which had been kept in the air. Free nicotine is known to be easily evaporated than compound ones. Thus it is probable that the production of free nicotine has an intimate connection with the O_2 starvation, in the inner systems of the leaf and the reduction of the content with it's evaporation from the surface of fresh or drying leaves. The loss of nicotine from the non-sprayed leaves might presumably be caused by the O_2 starvation due to stomata closure which customally observed after the leaves attained to mature stage. In the sprayed leaves, the surface of the mature leaves with closed stomata would bb covered with the film of the transpiration suppressant. As such a condition of the leaves will prevent the exchange of air efficiently, an advanced O_2 starvation would be resulted. This, in turn, will work toward the production of the leaves with lower nicotine levels than those in the non-sprayed ones.
- 日本作物学会の論文
- 1967-06-10
著者
関連論文
- 葉たばこの葉質に及ぼす蒸散抑制剤の影響
- X線照射花粉の交配によるタバコ半数体の育成
- 葉たばこのニコチン含量に及ぼす蒸散抑制剤の影響
- 9. 葉たばこのニコチン含量におよぼす蒸散抑制剤の影響
- 〔81〕子房中の生長調節物質におよぼすX線照射花粉の影響(予報) : 日本育種学会第17回講演要旨 : 一般講演
- [49]タバコ属の種間交雑における着〓と種子の充実度 : 日本育種学会第14回講演会講演要旨
- [35]子房中におけるIAAの活性度におよぼす花粉X線処理の影響 : 日本育種学会第13回講演会講演要旨 : 一般講演要旨
- タバコ属植物の交雑におけるX線処理花粉の影響 : I.タバコとアラータ節植物との交雑について
- 36.タバコ属植物の毛茸について : 日本育種学会第六回講演要旨
- 31.タバコ品種の癒傷速度と病害抵抗性 : 日本育種学会第四回講演会要旨
- 葯の組織培養による花粉からのタバコ幼植物の分化
- 葯培養によって得られたタバコの種類と半数体の染色体数倍加処理について