Jujube tree breeding technology

Abstract

A technique for reproduction of jujube tree features use of the caducous twig of jujube tree as raw material. It includes such steps as preparing the solution of auxin and its synergist, immersing the root of said caduceus twig in it, inserting it in the soil in greenhouse or plastic shed for generating calli and differentiating adventitious root, and differentiating complete plant.

Description

[0001] Field [0002] The invention belongs to the technical field of forestry seedling propagation, in particular to a technology specially used for the propagation of jujube trees. Background technique [0003] For thousands of years, people planted jujube trees to obtain natural tillering seedlings by cutting roots and ramets. Due to the small number and poor quality of seedlings obtained by this method, the survival rate after planting is low. Therefore, the quantity and quality of seedlings have always been the development The "bottleneck" of jujube trees, since the 1980s, in order to break through this "bottleneck", scientific and technological personnel have successively adopted experimental researches such as root tiller and bud strips returning to nursery, stem tip tissue culture, and rootstock grafting. In the past few years, experimental studies such as cutting seedlings have been carried out. The application of these research results in production has effectively ...

AI Technical Summary

Problems solved by technology

The application of these research results in production has effectively promoted the breeding of jujube seedlings, and has played a certain role in alleviating the shortage of seedlings. However, because the existing seedling raising methods have their own advantages and limitations, the "bottleneck" Problems still exist: the number of seedlings obtained by traditional root-cutting and ramets is small, and the quality is poor. After planting, the survival rate is low and the growth is slow; improved, but compared with the seedlings obtained by the group-cultivated seedling method, the quality is obviously not good enough, and a large number of root tiller buds are difficult to collect and cannot be reproduced in large quantities; It grows vigorously, has strong drought and cold resistance, and has obvious advantages in quantity and quality. However, the equipment required for group cultivation of seedlings is complicated, the operation technology requirements are high, and a large amount of manpower, electricity and chemicals are consumed. The cost of seedling cultivation is too high to be large-scale. A large number of seedlings can be obtained by grafting seedlings with rootstocks, but due to factors such as regional adaptability of rootstocks, grafting survival rate, and more labor, especially the seedlings obtained by grafting methods have poor regional adaptability, and are often frozen to death in winter. Therefore, it still cannot be applied on a large scale; in recent years, the cutting seedling cultivation test carried out has low cost of seedling cultivation, and the quality of the obtained seedlings is good, which can be compared with the seedlings obtained by the tissue culture method. Ear picking is difficult, and it is also difficult to promote on a large scale; the invention patent (publication number CN1327718A) of Comrade Wang Fuxi, Department of Biology, Baotou Normal University, Inner Mongolia, published on December 26, 2001, removed the original group seedling cultivation process from the cultivation stage of the laboratory, It saves a lot of manpower, electricity, sugar, agar, etc., greatly reduces the possibility of contamination, thereby reducing the cost of seedling cultivation, but in essence, this method is still a method of cutting seedlings. After soaking in MS medium, the cuttings are inserted into the substrate, and it is impossible to obtain cuttings from the cuttings of the year after they become seedlings. If you want to reproduce several times a year, you still need to cut a large number of jujube heads from other trees. There is still a problem of "difficulty picking ears" in this process, so it is still difficult to use this technology to carry out jujube seedling propagation on a large scale