植物における生毛体に関する細胞学的研究

Abstract

The spherical blepharoplast originates from the nucleus of spermatid in the spermatogenesis ofPteris multifida, Notogramme japonicaandIsoetes japonica. In MarsiliaandEquisetum, the centrosome of dividing spermatogenous cells remains in the produced spermatid and develops border-brim, cilia-bearing band and cilia. So one and the same double structure acts as centrosome in some cases, and acts as blepharoplast in the other cases.The double nature of blepharoplast has already been clarified in spermatogenesis of some animals, and the double nature of basal body which is thought to be the primitive type of blepharoplast has been confirmed in the division of zoospore ofStemonitis flavogenitaandS. splendensvar.flaccida. In this case the basal body also originates from the nucleus. In some cases, however, the basal body of zoospore showed positive Feulgen's reaction inStemonitisandFuligo.The information is sent out from the nucleus to blepharoplast or the basal body which develops the flagellar apparatus and controls the behavour of cilium or flagellum.The blepharoplast or basal body is thought to be the self-replicating system.