Method for breeding new species by fusion between various plants and distant induced mutagenesis

Abstract

The invention relates to a method for culturing new species by merging distant mutagenesis among various plants, which comprises the following steps: 1, the root or the tuberous stalk of a plant is selected as a parental stock; 2, the root of the selected plant is fully removed and used as a graft, and the fully root-removing part is a merging surface; 3, before the parental stock is merged, the merging surface is selected; 4, the graft and the parental stock are merged, the cross sections of the graft and the parental stock are tightly merged and aligned to form a layer; 5, a merging opening is fixed, the pierced part of the root or the tuberous stalk by an iron nail or a bamboo pegwood is fixed and covered by soil and compacted; 20 to 25 days later after mergence, the merging opening is healed, and tissue starts to merge; the graft starts to grow, a new root grows up at the merging opening 20 to 30 days later for facilitating the smooth growth, the blossom and the fructification of the graft, and a new species is mutagenized. In the distant adverse mutagenesis method, plants of different species are crossed and mutagenized by the distant mutagenesis, mutagenized offspring mutagenesis is far higher than natural mutagenesis, and the characteristics of the mutagenesis can be stably inherited. The method is simple to operate, has wide breeding material, rapidly stabilizes the offspring characteristics, accelerates the breeding process and is easy to generate new species and breeds.

Description

technical field [0001] The invention relates to a method for inter-plant fusion distant mutagenesis, in particular to a method for cultivating new varieties by mutual fusion distant mutagenesis of plants of different species. Background technique [0002] my country is a large agricultural country, and grain production occupies the most important position in my country's agricultural production. In food production, crop breeding undoubtedly plays a decisive and central role. The breeding of improved varieties in my country is the focus of agricultural development, and the breeding goal has shifted from the pursuit of high yield to the direction of high quality and special use; genetic resources and material innovation have become the focus of breeding research. Important content, the competition for resources has become the focus of competition in the agricultural industry; the use of heterosis in a wider variety of crops and at a higher level to achieve an organic combinatio...

AI Technical Summary

Problems solved by technology

[0003] Among the many scientific and technological factors that promote the increase of grain production, the contribution of breeding accounts for more than 1 / 3. However, at present, people mainly use conventional breeding technology, which has the following three defects: First, the breeding cycle is long, from hybridization to breeding It usually takes seven or eight years or even more than ten years for varieties; second, the efficiency is low, and dozens or even hundreds of hybrid combinations need to be prepared every year, and it is very good to be able to select a variety from them; third, the predictability is poor, and it is generally difficult to predict hybrid combinations The performance of the offspring, sometimes even if it is successful, does not understand the real reason

[0004] At present, the fusion mutagenesis between plants is basically carried out between varieties. Due to the close relationship between the parents and the lack of genetic gene pool, it is difficult to select breakthrough varieties, and there is no breakthrough change and improvement in their yield and quality per mu.