Technology for cultivating lodging-resistant wheat by utilizing adversity stress distant symbiosis and epigenetic inheritance

Abstract

The invention relates to the technical field of crop breeding, and discloses a technology for cultivating lodging-resistant wheat by utilizing adversity stress distant symbiosis and epigenetic inheritance. According to the technology, exchange of various substances and information between rootstocks and scions is promoted by creating distant symbiosis under adversity stress and generation of some epigenetic phenomena is induced. Further, a CEF process mediated by an NDH complex and other substances is enhanced, and new characters are given to offspring bred by wheat scions, so that the purposes of improving the photosynthetic efficiency of the wheat and achieving coarse, tough and lodging-resistant wheat stalks are achieved. According to the technology for cultivating the lodging-resistant wheat by utilizing adversity stress distant symbiosis and epigenetic inheritance, a new wheat strain obtains straw heredity characteristic of dwarf sorghum and efficient photosynthesis characteristic of C4 plants, nutrient substances are sufficiently accumulated, and stems are very thick and strong, so that the lodging-resistant wheat can resist destructive power of about 10-grade strong wind.

Description

technical field [0001] The invention relates to the technical field of crop breeding, in particular to the technology of cultivating lodging-resistant wheat by utilizing adversity stress distant symbiosis and epigenetic inheritance. Background technique [0002] For a long time, grafting has been widely used in crop production. Grafting can maintain the characteristics of good varieties, dwarf plants, improve yield and quality, etc., and rootstock can improve the growth vigor and resistance to diseases of scions. A number of studies have confirmed that the exchange of plant genetic information caused by grafting is an objective phenomenon. Horizontal transfer of genetic material between roots and ears, long-distance transport of genetic materials, epigenetic regulation, and interaction between root and ear and the environment have been widely studied. admit. [0003] Since wheat and sorghum are two plants with far-reaching kinship, their anatomical structures differ greatly...

AI Technical Summary

Problems solved by technology

[0003] Since wheat and sorghum are two plants with far-reaching kinship, their anatomical structures differ greatly, their physiological characteristics and metabolic pathways are different, and the somatic cell affinity is poor, which makes the contact surface between rootstock and ear not easy to fuse. For example, using conventional grafting methods , the operation is extremely difficult, the survival rate of the scion is extremely low, and an effective material and information exchange channel cannot be formed between the stock and the ear. Therefore, special 2 methods should be used for grafting to achieve the goal of efficient survival of the scion and complete the material and information exchange between the stock and the ear. The mission of the exchange is to finally obtain a high-yielding super wheat fertile line with high-quality genetics and traits