Application of biostimulants for vegetative propagation of endangered Abies gracilis  

作　　者：Lev P.Trofimuk Pavel S.Kirillov Aleksandr A.Egorov 

机构地区：[1]St.Petersburg State Forest Technical University,Institutskii pereulok 5,Saint-Petersburg,Russia 194021 [2]St.Petersburg State University,University quay 7-9,Saint-Petersburg,Russia 199034

出　　处：《Journal of Forestry Research》2020年第4期1195-1199,共5页林业研究（英文版）

基　　金：This work was supported,in part,by the Department of Science and Innovation of the Yamalo-Nenets Autonomous District under the Government Contract No.01-15/4 dated 25.07.2012,by the Ministry of Education and Science of the Russian Federation under the Project No.2014/181-2220.

摘　　要：Abies gracilis Kom.(Pinaceae)is one of the rarest and endangered conifers in the Russian flora,which must be cultivated ex situ to ensure its survival.Cuttings of A.gracilis do not take root without biostimulants.We used a selection of biostimulants,concentrations,and conditions of their use to significantly increase Abies gracilis rooting,and to accelerate the production of planting material,and to reduce rooting time to one season.We tested 4 rooting systems:IBA,IBA with glucose and glycine,and original biostimulants(S-try and S-5).The original S-5 biostimulating system had the most balanced ratio of components.The number of rooted samples increased 2.7 times and the length of roots increased 1.8 time when using S-5 as compared to IBA.S-try and S-5-original biostimulant systems were synthesized and collected in 2011 and 2014,respectively,and were tested in St.Petersburg Forest Technical University.

关 键 词：Root formation Abies gracilis Biostimulant PLANTING Vegetative reproduction 

分 类 号：S791.14[农业科学—林木遗传育种]