Method for breeding storage-resistant, high-yield and good-quality new green Chinese onion variety

Abstract

The invention provides a method for breeding a storage-resistant, high-yield and good-quality new green Chinese onion variety. Qingye No.1 green Chinese onion serves as the material, a green Chinese onion sterile line breeding nursery is built, a green Chinese onion male sterile line and a maintainer line are bred, and a good-quality green Chinese onion male sterile line assessment and screening system is built; single plant selfing is conducted in green Chinese onion resources with different characters, a stable and homozygous male parent line is directionally selected and bred, comprehensive character identification is conducted, and a good male parent line is bred; by hybridizing the bred good male sterile line and the male parent line, a hybrid combination is prepared, and the new green Chinese onion variety is bred by identifying storage resistance, yielding ability and stress resistance of offspring of the hybrid combination. An efficient male sterile line breeding technical assessment and screening system is built for the first time, germplasm resources are innovated, the new triple crossing green Chinese onion variety which is resistant to storage, high in yield, resistant to diseases, high in stress resistance and suitable for multiple-season cultivation is bred, and technical support is provided for breeding of good-quality new green Chinese onion varieties.

Description

technical field [0001] The invention relates to the field of genetic breeding, in particular to a method for breeding new varieties of scallions with storage resistance, high yield and high quality. Background technique [0002] Scallion is a plant of the genus Allium in the Liliaceae family. It originated in western China and Siberia in the Soviet Union. It was domesticated and selected from wild onions in China. China is the main country where scallions are cultivated and is also the origin of scallions. It was later introduced to Japan via Korea. In 1583 It was introduced to Europe in the 19th century and to the United States in the 19th century, but there were very few cultivations in Europe and the United States. The world's scallion planting area is 9 million mu, and my country accounts for 8.1 million mu. [0003] With the development of the road to industrialization, some problems in the production of scallions have gradually emerged: first, the storage loss rate is t...

AI Technical Summary

Problems solved by technology

Due to extensive introduction, self-propagation, non-standard breeding techniques, etc., the variety is mixed, the species is degraded, the population uniformity and resistance are poor, and it cannot meet the needs of production and market in terms of stress resistance and quality.

Images