Ultraviolet mutation breeding and acclimatization method of salt-resisting domestic fungus

Abstract

The invention discloses an ultraviolet mutation breeding and acclimatization method of a salt-resisting domestic fungus. According to the invention, initial domestic fungus strains are activated and are subject to mycelium ultraviolet mutation; salt-resisting stains are subject to primary screening, acclimatization and secondary screening by using salt-containing selective culture media, such that the salt-resisting stain is obtained. The method is suitable to be used in salt-resisting stain breeding and acclimatization of domestic fungus varieties such as cap fungus, shiitake fungus and Jew's ear. The method is advantaged in that: the high-salt-resisting mutation strain is obtained with the mycelium ultraviolet mutation and acclimatization method, such that a novel approach of salt-resisting cap fungus breeding is developed. The operation processes are simple, a small amount of equipment is required, the cost is low, such that the domestic fungus breeding method is easy to popularize. A mutation period is short, a forward mutation rate is improved, and an effect is substantial. The obtained strain has a salt-resisting capacity of 2%, stable hereditary characters, and excellent agronomic characters. When the method is used in the productions in saline alkali lands, the quality of cap fungus fruiting bodies is improved; and a fresh-to-dry weight ratio and a storing tolerance are improved by more than 50%. Therefore, the quality of cap fungus is effectively improved, the production cost is reduced, and the economic benefits are substantially improved.

Description

technical field [0001] The invention belongs to the ultraviolet mutation breeding and domestication of salt-tolerant edible fungi, and particularly relates to a kind of edible fungus mycelia undergoing ultraviolet radiation mutagenesis, and then using salt-containing selective medium to screen and domesticate to obtain salt-tolerant strains Methods. Background technique [0002] China has a vast area of ​​saline-alkali land, and the soil and groundwater contain high salinity, which greatly affects agricultural production. Therefore, cultivating salt-resistant and salt-tolerant crop varieties and improving their salt-tolerant ability is an economical and effective method to improve the utilization of saline-alkali land. [0003] Edible fungus is delicious and nutritious, and has the reputation of "the meat of the vegetarian", and it also has high medicinal value, which fully conforms to the food principle of "natural, nutritious and healthy" advocated by the World Health Org...

AI Technical Summary

Problems solved by technology

The traditional method of breeding salt-tolerant strains of edible fungi is to cultivate new varieties by means of artificial selection or hybridization. The workload is heavy, the screening period is long, and the probability of obtaining positive mutant strains is small.