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《Journal of Anhui Agricultural Sciences》 2009-22
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Effects of Nano-TiO_2 on Seed Germination Capacity of Tibetan Capillary

DONG Hui-ze et al(Qinghai University,Xining,Qinghai 810016)  
[Objective] The aim was to provide the theoretical basis for artificial cultivation of Tibetan capillary.[Method] With the seeds of 2 kinds of Tibetan capillary Swertia mussotii Franch and Swertia frachetiana H.Smith as the materials,they were soaked in nano-TiO2 solution.With the treatment by clear water as CK,the effects of soaking time,TiO2 concn.and light condition on germination rate and germination energy of seeds were studied.[Result] When TiO2 was 400 mg/g,the germination rate and germination energy of S.mussotii seeds were 16.4% and 17.5% higher than those of CK resp.When TiO2 was 200 mg/g,the germination rate and germination energy of S.frachetiana seeds were 14.1% and 17.2% higher than those of CK resp.When soaking time were 9,12 h,the germination rate and germination energy of S.mussotii seeds were 74.4%,79.3% and 74.1%,77.7% resp.When soaking time was 12 h,the germination rate and germination energy of S.frachetiana seeds were 56.9% and 83.8% resp.Under sunlight radiation,the germination rate and germination energy of the seeds of S.mussotii and S.frachetiana were 71.7%,73.2% and 81.4%,86.9% resp.[Conclusion] Seed soaking with nano-TiO2 could increase the germination capacity of Tibetan capillary.
【Fund】: 青海省科技攻关项目(2007-N-126)
【CateGory Index】: S567.239
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