Study On The Regeneration Methods And Seedling Technology Of Wild European Plum

In order to grasp the regeneration rules of wild European plum and the suitable seedling breeding technology,the appropriate protection suggestions were put forward.Taking wild European plum as the research object,this paper investigated the seeds and root tillering seedlings in the natural habitat of wild European plum and analyzed their renewal methods.In this paper,the seedling propagation,grafting propagation and cutting propagation of wild European plum were studied.The main results are as follows:(1)According to the survey,it was difficult for wild European plum population to rely on seeds for regeneration in natural habitat,and root tillering was the main method for regeneration of wild European plum population.In the asexual regeneration of wild European plum,the asexual reproduction of root tiller was dominant,accounting for 92.4%.However,as another asexual propagation method of wild European plum,the bud sprout had little effect on the population renewal of wild European plum,accounting for only 7.6%of the total number of seedlings.The distribution of root tiller seedlings was found in both jiaowuohai and resource nursery,but the number of root tiller seedlings varied greatly.Suckers rank for Ⅱ>Ⅵ>Ⅲ>Ⅴ>Ⅰ>Ⅳ.The number of wild European tiller seedlings was large,but few of them grow into young trees.(2)The results showed that the growth of seedlings was the best in the garden soil+perlite+riversand(1:1:1)medium.The stem diameter of seedlings was the largest,6.98 mm,the plant height was the largest,77.85 cm.The stem diameter of seedlings was the smallest,5.45 mm.The plant height was the smallest,50.01 cm.The germination rate,the stem diameter,plant height,number of branches and leaves of wild plum seedlings sown in Ili botanical garden were significantly higher than those sown in three teams.(3)When the shear anvil length of wild European plum grafting seedlings was 2 cm,the growth amount of transplanted seedlings increased rapidly.And the germination rate and survival rate were also higher,which was the better shear anvil length of wild European plum grafting seedlings.On April 9,the growth of grafted seedlings increased rapidly and the survival rate reached 100%.The higher the number of sprouting,the higher the growth rate,the higher the survival rate and the higher the germination rate.After the number of sprouting reached 4 times,the growth rate tended to be flat.However,when the number of sprouting reached a certain degree,the effect of budding on the transplanted seedlings became smaller.(4)After the survival of wild European plum cuttings,the transplant mortality in that year was high.And the growth rate of the cuttings was slow.The cuttings should be transplanted in the second year after survival.The results showed that the survival rate of single substrate was less than 70%,so it was not suitable to be used as the transplanting substrate for cuttings.When the substrate was orchard soil+peat(1:1),the cuttage growth was the largest and the survival rate was up to 90%.