Breeding method for a high-yield and disease-resistant purple-grained wheat strain

Abstract

The invention relates to the field of selective breeding of wheat, and in particular discloses a selective breeding method of a high-yield and disease-resistant purple grain wheat line. The selective breeding method comprises the steps of carrying out backcross on purple grain wheat Luozhen No. 1 and dwarf-male-sterile wheat for a plurality of times to breed purple grain dwarf-male-sterile wheat; after that, carrying out crossbreeding through fully open free pollination by taking the purple grain dwarf-male-sterile wheat as a female parent and taking Zhoumai No. 22 and Jimai No. 22 as male parents to obtain purple grain hybrid F0 generation; screening the purple grains in the purple grain hybrid F0 generation for planting, and breeding the high-yield and disease-resistant purple grain wheat line by means of self-cross selective breeding of more generations, wherein the purple grain wheat grains of the last generation are selected for planting in the process of self-cross selective breeding. The method takes the Luozhen No. 1, the dwarf-male-sterile wheat, the Zhoumai No. 22 and the Jimai No. 22 as parents, and implements open pollination in the selective breeding process so as to enable genes to make full exchange; good genes and target shapes are effectively aggregated, so that a large number of outstanding single plants appear in the group, and the purple grain wheat progress is accelerated; the new purple grain wheat line obtained by selective breeding is high in yield and good in disease resistance.

Description

technical field [0001] The invention relates to the field of wheat breeding, in particular to a method for breeding high-yield and disease-resistant purple-grained wheat strains. Background technique [0002] In recent years, colored food has attracted the attention and favor of consumers for its naturalness, nutrition, functionality, science and ornamental value. The development of nutritious food has become one of the hot spots in the research of the food industry. With the gradual deepening of people's understanding of staple food nutrition and health, and a large number of basic studies have proved that colored wheat is rich in protein, lysine and zinc, selenium, calcium, iron, iodine and other trace elements beneficial to the human body. In addition to minerals, it also has preventive effects such as lowering blood pressure and preventing cancer, and has high nutritional value and health care. The planting and processing industry of colored wheat is also in line with t...

AI Technical Summary

Problems solved by technology

[0004] In recent years, people have also begun to use dwarf wheat genes to hybridize with colored wheat genes to breed new wheat varieties. For example, Chinese patent CN103250627A discloses a method for cultivating purple dwarf wheat. The male sterile line durum wheat material 10118 was used as the female parent, and it was crossed with the common wheat Zhoumai 18 for several times to produce a purple dwarf wheat male sterile line variety, which has the characteristics of purple grains, short stems, sterility, and robustness. However, the disease resistance and yield of the purple-grained dwarf wheat sterile variety still cannot meet the needs of modern agriculture.