纳米TiO2光催化剂对藏茵陈种子萌发能力的影响

[目的]为藏茵陈的人工栽培提供理论依据。[方法]以川西獐牙菜和抱茎獐牙菜2种藏茵陈种子为材料,用纳米TiO2溶液对其进行浸种处理,以清水处理为对照,研究浸种时间、TiO2浓度及光照条件对种子发芽率及发芽势的影响。[结果]当TiO2浓度为400mg/g时,川西獐牙菜种子的发芽势及发芽率分别较对照高16.4%和17.5%,当TiO2浓度为200 mg/g时,抱茎獐牙菜种子的发芽势及发芽率分别较对照高14.1%和17.2%;浸种9、12 h时,川西獐牙菜种子的发芽势及发芽率分别为74.4%、79.3%和74.1%、77.7%;浸种12 h时,抱茎獐牙菜种子的发芽势及发芽率分别为56.9%和83.8%;日光照射下,川西獐牙菜和抱茎獐牙菜种子的发芽势及发芽率分别为71.7%、73.2%和81.4%、86.9%。[结论]纳米TiO2浸种可提高藏茵陈种子的萌发能力。

Effects of Nano-TiO2 on Seed Germination Capacity of Tibetan Capillary

[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...