Impact of different concentrations of plant growth regulator GGR7 on the softwood cuttings of Lycium barbarum L. No. 1.

[Objective]To optimize the softwood cutting technology of Lycium barbarum L. No.1,so as to provide supply support for local agricultural production. [Method]With the clear water as the control,the impact of different concentrations ( 50,100,150 and 200 mg/L) of GGR7 on the survival rate,average root number,average root length,average root diameter,average shoot number,average shoot length,root architecture and rootage position was studied. [Result]GGR7 could improve the rooting speed,survival rate and new shoot length while reduce the root diameter. And it also inhibited the rooting of cuttings,but with the increasing concentration of GGR7,the inhibition effects gradually disappeared. High concentrations( ≥150 mg/L) of GGR7 could promote the rooting of cuttings callus. GGR7 had little impact on the shoot number and root number of Lycium barbarum L. No.1. [Conclusion]The optimal concentration of GGR7 for Lycium barbarum L. No.1 was 150 mg/L.