PAPER: Spraying water-soluble particles to komatsuna leaves. 小松菜に水溶性微粒子を散布したら・・

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Free-access (until Dec. 1, 2017):

Komatsuna plants were grown and exposed to ammonium sulfate (((NH4)2SO4), AS) submicron particles for 16 days (22.5 µg m−3 per day) in phytotrons.

The amount of particles deposited on the leaf  decreased over time, because AS particles deposited on the leaf deliquesced, allowing ions such as SO42− in the solution to be absorbed into the leaf. 葉表面に堆積した粒子の量は時間とともに減少した。サブミクロン硫酸アンモニウム(AS)粒子が葉表面に堆積し、脱離溶液中のSO42−などのイオンが葉に吸収される可能性が高い。

PowerPoint プレゼンテーション
Time trend of relative amount of “S-ion” on the leaf surface of komatsuna plants. Each symbol represents the mean of three experimental replicates.

PowerPoint プレゼンテーション

Stomatal closure is one of the reasons for the AS particle-induced reductions in the growth and yield of komatsuna plants. 気孔閉鎖は,小松菜の成長と収量の減少(AS粒子の影響で)の理由の一つである。

Other Highlights

• Exposure to fine particles did not affect leaf chlorophyll and nitrogen contents.微粒子の曝露は葉のクロロフィルおよび窒素含量に影響を及ぼさなかった。
• Exposure to fine particles reduced stomatal conductance during the day time.微粒子の暴露は昼間の気孔コンダクタンスを減少させた。

Atmospheric Environment

JOURNAL: Atmospheric Environment
Volume 169, November 2017, Pages 278-286.
Effects of submicron ammonium sulfate particles on the growth and yield of komatsuna (Brassica rapa L. var. perviridis)
by Akira Motai, Satoshi Nakaba, I. Wuled Lenggoro, Makoto Watanabe, Yoshiharu Wada, Takeshi Izuta (Tokyo University of Agriculture and Technology, Utsunomiya University)

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