尖萼耧斗菜外植体消毒及愈伤组织诱导的研究（摘要）

目的]研究尖萼耧斗菜外植体消毒及愈伤组织的诱导。方法]采用不同消毒剂种类和浓度,对尖萼耧斗菜种子进行消毒处理,研究其污染率和污染速率,寻找建立无菌苗培养系最适宜的方法;以尖萼耧斗菜种子获得的无菌苗的根、茎、叶片为外植体,通过在MS基本培养基中附加不同激素配比,筛选最佳外植体和最佳培养基配方。结果]外植体材料最适宜的灭菌处理方法为：先将外植体在75%酒精中浸30s,用无菌水冲洗5遍,再将其用0.2%升汞液浸泡2min,再用无菌水冲洗5遍。该消毒方法使污染率最低、发芽率最高,并且获得的无菌苗长势最好;诱导尖萼耧斗菜胚性愈伤组织的最佳外植体为幼根;诱导胚性愈伤组织的最佳培养基为MS0.6mg/L2,4-D＋0.5mg/L6-BA。结论]该研究为尖萼耧斗菜的大规模生产提供了技术支持,并为其药用和观赏价值的最大发挥作出了贡献。

Study on Explants Sterilization and Callus Induction of Aquilegia oxysepala

Objective] The aim was to study the explants sterilization and callus induction of Aquilegia oxysepala.Method] the seeds of Aquilegia oxysepala were sterilized by different kinds and concentrations of disinfectants,and the pollution rate and pollution speed were investigated so as to find the best way to build sterile seedling setup.Taking the roots,stem segments and leaves of the sterile seedlings from Aquilegia oxysepala seeds as explants,the optimum explants and medium were screened by adding MS basic medium with different hormone proportions.Result] The best germicidal treatment was as follows：explants were soaked in 75% alcohol for 30 s firstly,washed by sterile water for 5 times,then soaked in 0.2% mercuric chloride liquid for 2 min,finally washed by sterile water for 5 times again.The sterilization treatment could get the lowest pollution rate,the highest germinating capacity and the best sterile seedling.Roots were the optimum explants for the callus induction of Aquilegia oxysepala,meanwhile the optimal medium was MS＋0.6 mg/L 2,4-D＋0.5 mg/L 6-BA.Conclusion] The research provides technical support for the large scale production of Aquilegia oxysepala and also makes a contribution to the medicinal and ornamental value of Aquilegia oxysepala.