在食用菌遗传育种研究领域中,尤其在杂交育种时,常常涉及到杂交后代若干世代问题。而关于“世代”的含意,目前在食用菌的生产和科研中还很混乱。如:有的人把母种每转一次管就称之为“一代”;有的人则把从母种转接到原种培养料上,或从原种转接到栽培料上,也称为一代或二代。以上情况,仅是原菌丝继续有丝分裂而进行繁殖,没有涉及到任何世代交替。为此,笔者建议,对食用菌的“世代”一词,应该有统一的科学概念。正确的说,一个世代周期,指从孢子萌发形成一个单核初生菌丝开始,不同性别菌丝交配形成双 In the field of genetics and breeding of edible fungi, especially in crossbreeding, it often involves several generations of crossbreeding problems. However, the meaning of “generation” is still very confused in the production and research of mushrooms. For example, some people refer to the mother tube as a “generation” once per rotation; others transfer from the mother species to the original species cultivation material or from the original species to the culture material, also known as For a generation or two generations. The above situation, only the original mycelium continue mitosis and breeding, did not involve any generation alternately. For this reason, I suggest that the term “generation” of edible fungi should have a unified scientific concept. Correctly speaking, a generation cycle, refers to the germination of spores from the formation of a mononuclear primary mycelium began, different gender mycelium mate double