Rapid rooting and breeding method of castor lateral buds

Abstract

The invention belongs to the technical field of crop fast breeding, and discloses a fast rooting and breeding method of castor lateral buds. The young lateral buds of a plant are used as cutting materials, and the young lateral buds are pruned and soaked with relevant concentration of growth hormone, and the humidity and temperature of the cutting seedling bed are controlled; the plant lateral budcutting and rooting are carried out; the method particularly comprises the following steps of: selecting lateral buds of a castor plant; controlling the temperature and humidity of a small greenhousecutting seedling bed, carrying out statistics on the rooting of the cutting lateral buds after cutting, and calculating the rooting rate of the cutting. According to the invention, the cutting time is greatly saved, the rooting rate of the castor lateral buds is greatly improved relative to the rooting rate of the prior castor branch cutting based on experiment data statistics, and the rooting rate can reach more than 70%. According to the invention, the method is suitable for the rooting of the lateral buds of different plants, and the rooting rate of the cutting of the lateral buds of annual castor plants or perennial castor plants is very ideal, and the rooting rate is more than 70%.

Description

technical field [0001] The invention belongs to the technical field of fast breeding of crops, and in particular relates to a method for rapid rooting and propagation of lateral buds of castor. Background technique [0002] Castor (Latin scientific name: Ricinus communis L.), Euphorbiaceae, Ricinus, dicotyledonous plant, annual or perennial herb, often a perennial shrub or small tree in tropical or southern regions. Castor is a kind of high energy storage oil plant, and it is an important industrial raw material at present. Castor oil has important development and utilization value. Castor oil has high viscosity and low freezing point, and is resistant to severe cold and high temperature. It does not freeze at 10°C, does not solidify and denature at 500-600°C, and has characteristics that other oils cannot match. It is an important raw material for chemical industry, light industry, metallurgy, electromechanical, textile, printing, dyestuff and other industries. [0003] I...

AI Technical Summary

Problems solved by technology

[0007] (1) In the prior art, the survival rate of castor-oil polyploid lateral bud propagation seedling cultivation is very low; the humidity and temperature of the cutting propagation seedbed can not be accurately controlled, and the unfavorable rooting conditions of cutting before can not be overcome;

[0008] (2) In the prior art, it is impossible to solve the problem that the free combination of genes that may occur in castor through sexual reproduction leads to the separation of traits, making the original good traits of breeding degenerate or disappear

[0009] (3) In the prior art, the consumption of pharmaceutical reagents is large and the cost is high

[0014] Therefore, there is no report on castor plant leaf cuttings. Researchers have tried to use castor plant stem cuttings, but the effect is still not ideal. The main limiting factor is that castor plant stems are not solid. In addition, castor has a high degree of lignification, these factors make it more difficult to root, and the survival rate of stem cuttings is still very low

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