Method for tender branch cutting propagation of Linze jujube

Abstract

The invention relates to a method for tender branch cutting propagation of a Linze jujube, comprising the following steps of: selecting tender branches, wherein the selected tender branches are the tender branches grown from jujube saplings with semi-lignification under high temperature; collecting the tender branches, soaking tender branch cuttings in a well-prepared mixed solution; constructing a seedbed through the steps of sanding, disinfecting, heat preserving, light and moisture regulating and sterilization; and then carrying out cutting propagation and acclimatization. The invention is a duplicating jujube plantlet method by using current-grown tender branches as propagation materials. The duplication process is actually a root getting process, by which rootless branches are grown into rooting plants after being soaked in auxin and an auxin synergist solution. Compared with the most advanced traditional tissue-cultured seedling method, the invention has breakthroughs on two aspects of: 1, capability of directly taking self-rooted seedlings, which solves the problem of hard root-taking of jujube seedlings; and 2, propagation of pure and high-quality plantlets, which solves the bottleneck problem of propagating the pure and high-quality seedlings in the appropriate technology field through the ages.

Description

technical field [0001] The invention belongs to forestry seedling breeding technology, specifically a technology specially used for jujube tree breeding. Background technique [0002] Jujube is a tree species that is difficult to take root from cuttings. The conventional seedling raising technique is to cut the roots and divide the plants to obtain root tiller seedlings. The number of seedlings obtained by this method is small, the quality is poor, and the survival rate of planting is low. With the rapid development of modern forestry, the quantity and quality of seedlings have become the "bottleneck" that restricts the development of jujube industrialization. Tests such as cultivating seedlings and grafting seedlings, these research results have been widely used in production, effectively promoted the breeding of jujube seedlings, and played a certain role in alleviating the shortage of seedlings, but the above-mentioned seedling methods have their own advantages and disadv...

AI Technical Summary

Problems solved by technology

[0002] Jujube is a tree species that is difficult to take root from cuttings. The conventional seedling raising technology is to cut the roots and divide the plants to obtain root tiller seedlings. The number of seedlings obtained by this method is small, the quality is poor, and the survival rate of planting is low.

With the rapid development of modern forestry, the quantity and quality of seedlings have become the "bottleneck" that restricts the development of jujube industrialization. Tests such as cultivating seedlings and grafting seedlings, these research results have been widely used in production, effectively promoted the breeding of jujube seedlings, and played a certain role in alleviating the shortage of seedlings, but the above-mentioned seedling methods have their own advantages and disadvantages. Each has its limitations, therefore, the "bottleneck" problem of seedlings still exists: the number of seedlings obtained by traditional root cutting and division seedlings is small, the quality is poor, the survival rate after planting is low, and the growth is slow; The quality of seedlings is improved compared with the seedlings obtained by the traditional method of cutting roots and dividing plants, but compared with the seedlings obtained by the group cultivation seedling method, the quality is obviously not good enough, and it is difficult to collect root tillers and buds, and cannot be reproduced in large quantities; the method of group cultivation of seedlings is adopted The obtained seedlings have a well-developed root system, a high survival rate of planting, vigorous growth, strong resistance, and obvious advantages in quantity and quality. However, the equipment required for group cultivation of seedlings is complicated, the operation technology is high, and a large amount of manpower, electricity and chemicals are consumed. , the cost of raising seedlings is too high, and it is difficult to apply on a 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 regional adaptability of seedlings obtained by grafting is relatively low. It is poor and often freezes to death in winter, so it is still unable to be applied on a large scale; in recent years, the cutting seedling cultivation experiment 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 tissue culture. Jujube heads and branches are also difficult to promote on a large scale as propagation materials; the invention patent (publication number CN1327718A) of Comrade Wang Fuxi, Department of Biology, Inner Mongolia Normal University disclosed on December 26, 2001 removed the original group seedling cultivation process from the laboratory In the cultivation stage, it saves a lot of manpower, electricity, sugar and agar, which greatly reduces the possibility of contamination, thereby reducing the cost of seedling cultivation, but in essence, this method just soaks the cuttings in MS medium After treatment, the cuttings are inserted into the substrate, and it is impossible to obtain cuttings from the cuttings of the cuttings after they become seedlings. If you want to reproduce several times a year, you still have to cut a large number of jujube heads and branches from other trees. There is still a problem of "difficulty picking ears" in the first process. It is still difficult to carry out jujube seedling propagation on a large scale with this technology.