Method for breeding new tremella aurantialba variety through combination of tremella aurantialba asexual spores and stereum hirsutum

Abstract

The invention relates to a method for breeding a new tremella aurantialba variety. The method comprises the steps that asexual spores and stereum hirsutum in tremella aurantialba strains from different producing areas are separated, cross combination and collocation are carried out on the asexual spores and stereum hirsutum of the tremella aurantialba from different sources, so that excellent properties of female parents of two species are combined into a combined tremella aurantialba sporocarp strain, then, character stability of the tremella aurantialba is maintained through asexual propagation so as to be applied to production, and therefore new strains and new varieties of the tremella aurantialba are formed. The method provides a feasible way for breeding of tremella aurantialba strains or varieties, and tremella aurantialba recombinant strains with high yield and disease resistance are obtained by using the method to breed the tremella aurantialba strains.

Description

technical field [0001] The invention belongs to the field of edible fungus cultivation, and in particular relates to a method for selecting and breeding new varieties of Auricularia aureus by combining asexual spores of Auricularia aureus and Bacillus chaete. Background technique [0002] The prior art describes the biological characteristics of golden ear as follows: golden ear is a kind of parasitic fungus, which is parasitic on Bacillus chamomile. The complex composed of hyphae, the growth of golden ear mycelium depends on the provision of nutrients for it by Bacillus chaete. There are few reports on the research on the selection of golden ear strains, usually involving conventional strain propagation methods, and the description of strain quality only involves the difference between effective strains and invalid strains [1-3] . [0003] In the past few decades after the success of the artificial cultivation technology of golden ear, the strains are basically isolated f...

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Problems solved by technology

[0003] In the past few decades after the successful artificial cultivation of golden ear, the strains were basically isolated from the fruiting body of wild golden ear, and then used continuously Entities are used for countless generations of transgenerational reproduction, resulting in fewer sources of provenance, degradation of strain production performance after multi-generation vegetative propagation, and strains carrying viruses or miscellaneous bacteria. Background The combination of Auricularia spp. and Bacillus chamomile creates a new combination, a new material for innovative Auricularia breeding, from which new strains or varieties of Auricularia spp. have not been reported in journals or patent documents.

[0004]Currently, the quality of commercial golden ear fungus species is uneven, the genetic background of the strain is unclear, and the production characteristics are unstable. use, resulting in fewer sources of provenance, multi-generation vegetative reproduction, strain production performance degradation, and strains carrying viruses or miscellaneous bacteria, etc. It has been verified that most strains have poor disease resistance, especially for Trichoderma type miscellaneous bacteria. Poor, the pollution rate of the cultivation bag during the cultivation process is as high as about 15%, the conversion rate of a wet mushroom is about 55%, and the consistency is about 75%, which does not have the characteristics of an excellent variety

The technical indicators that can be achieved by using the existing commercial golden ear strains for production are relatively low, and cannot meet the requirements of modern agricultural fine management and high-efficiency output. In order to promote the upgrading and development of the golden ear cultivation industry, it is urgent to select and breed stable A new variety of golden ear with high yield and disease resistance

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