What to Do When Edible Mushroom Spawn Degenerates? Detailed Solutions

How Can Edible Mushroom Spawn Degeneration Be Prevented?

1. Ensure pure culture of the spawn. Do not use spawn contaminated by foreign microbes, and do not mix or culture different strains of the same edible mushroom species together or in close proximity.

2. Strictly control the number of spawn subcultures, reduce mechanical damage, and ensure spawn vigor.

3. Store spawn at appropriately low temperatures. Low-temperature-type spawn (such as button mushroom, shiitake, etc.) at 4°C, and high-temperature-type spawn (such as straw mushroom) at 16°C, which helps preserve the vigor of the mycelium.

4. Avoid repeated subculturing in a single medium; following a reasonable sequence of generations and using different types of media for mother culture, stock culture, and production spawn helps improve spawn vigor and maintain excellent traits.

5. Spawn should not be used for too long; over-aged spawn will age, and aging and degeneration are organically linked, so spawn with weak vitality is prone to degeneration.

6. Spawn should be rejuvenated regularly, under conditions of suitable temperature, appropriate pH, sufficient oxygen, proper diffused light, and culture free of foreign microbes.

7. Carry out spore isolation every year to discover excellent strains through sexual reproduction, and use tissue isolation to consolidate the genetic characteristics of excellent strains.