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《Journal of Anhui Agricultural Sciences》 2010-31
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Effect of Ultrasound-assisted Photocatalysis on Seed Germination of Swertia mussotii Franch.

DONG Hui-ze et al(Qinghai University,Xining,Qinghai 810016)  
[Objective] The aim was to study the effect of ultrasound-assisted nanometer TiO2 photocatalysis on seed germination of Swertia mussotii Franch.[Method] The S.mussotii seeds were treated by ultrasound-assisted nanometer TiO2 photocatalysis.The differences of seed germination potential and germination rate in treatments with different ultrasonic time(15,30,45,60,75,90 min) and ultrasound intensity(120,150,180,210,240,270,300 W) were compared.[Results] The ultrasound-assisted nanometer TiO2 photocatalysis had obvious promotion on seed germination of S.mussotii when ultrasonic power was 210 W,ultrasonic time was 30 ~ 60 min or ultrasonic time was 45 min,ultrasonic power was 210 ~ 240 W.And the treatment effect was the best when ultrasonic power was 210 W and ultrasonic time was 45 min.[Conclusion] The treatment of ultrasonic with certain intensity and time assisted nanometer TiO2 photocatalysis could obviously promote the seed germination of S.mussotii.
【Fund】: 青海省科技攻关项目(2007-N-126)
【CateGory Index】: S647
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