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菌物学报  2015 

金针菇生活史各阶段核相研究

DOI: DOI:10.13346/j.mycosystema.140069, PP. 386-393

Keywords: 同核体,异核体,减数分裂,有丝分裂,荧光显微观察

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Abstract:

对金针菇Flammulinavelutipes生活史各阶段的菌丝体、子实体、担孢子等进行荧光显微观察。结果表明,金针菇单个担孢子发育而来的同核体菌丝为单核,无锁状联合,部分单孢菌株能形成同核子实体,同核子实体的原担子中只有1个核,该核在担子中进行一次有丝分裂形成纵向排列的2个子核,担子发育停止,同核子实体不产生担孢子;具有可亲和交配型的两个同核体菌丝经过质配形成异核体菌丝,异核体菌丝双核,具有锁状联合,能形成异核子实体,异核子实体的原担子中具有2个核,这2个核经过核配融合为1个二倍核,二倍核在担子中进行减数分裂形成4个单倍子核,4个子核分别进入4个担孢子中,随着担孢子继续发育,其中的单核再进行一次有丝分裂,成熟担孢子为双核,但这2个核是同质的。单核菌丝和双核菌丝都能产生粉孢子,且产生的粉孢子均为单核。

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