Journal of Tianjin Agricultural University ›› 2018, Vol. 25 ›› Issue (4): 1-5.doi: 10.19640/j.cnki.jtau.2018.04.001

• Researches and Scientific Notes •     Next Articles

Studies on in vitro rooting and direct transplanting into ground of Cotoneaster hjelmqvistii plantlets in vitro in field environment

WANG Ran1, SHI Hai-dong1, CHAI Ci-jiang1,Corresponding Author, WEI Rao-pei1, SONG Qiu-yue1, SHI Yan-shan1, LUO Jian-xia1, ZHANG Yan2   

  1. 1. College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin 300384, China;
    2. Inner Mongolia Tongliao Horqin District Agricultural Technology Extension Center, Tongliao 028000, Inner Mongolia Autonomous Region, China
  • Received:2018-08-18 Online:2018-12-20 Published:2019-11-12

Abstract: The aim of this study was to research on in vitro rooting and transplanting of Cotoneaster hjelmqvistii plantlets in vitro in field environment. Three shading methods(shading with two layers of sunshade net, three layers of sunshade net or tree shade)were used for in vitro rooting of C. hjelmqvistii plantlets in field environment in last ten days of April, and transplanting experiments were carried out with two preserve moisture cover methods in two periods. The results showed that there was no significant difference in the effect of root culture among the three shading methods, and the rooting rate of 89.7%-95.9% were obtained meanwhile the plantlets grew normally. The closure function of the stomata in treatment of shading with two layers of sunshade net was obviously stronger than that of the other two shading methods. There was no significant difference in the survival rate of the plantlet transplanted between both preserve moisture cover methods of the fully cover and the cover with top opening; the survival rate of transplanted plantlets in June 1st and June 27th had no significant difference, and the survival rate was all up to 97.5%-100.0%. The results can provide a basis for reducing the cost of C. hjelmqvistii plantlets in vitro and promoting the tissue culture rapid propagation technique application to reproduction.

Key words: Cotoneaster hjelmqvistii plantlet in vitro, field environment, in vitro rooting, transplanting

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