泥鳅雌核生殖单倍体胚胎发育的研究

STUDY ON THE DEVELOPMENT OF GYNOGENESIS HAPLOID OF Misgurnus anguillicaudatus

本文研究了泥鳅雌核单倍体的胚胎发育。结果表明,单倍体的外部形态具有典型的单倍体综合症、单倍体的发育速度在眼黑色素期前与二倍体无明显差异,但此期以后则无法确定单倍体的发育时期。在水温为22—25℃时,单倍体至多存活15d。与正常二倍体卵黄囊吸尽期同时龄的单倍体,大多数内部器官或组织发育不良,细胞核小,但核质比与二倍体无明显差异。

The report which follows studies on the embryonic development of Misgurnus anguillicaudatus. The haploids had the obvious haploid syndrome. The development rate of gynogenesis haploids, compared with that of diploids was the same before Melanoid eye stage. But it was hardly to identify the developmental stages of gynogenesis haploids after Melanoid eye stage. The gynogenesis haploids coudn't survival for more than 15 days in 22℃ to 25℃ . We had also made comparative studies on the morphogenesis of the internal orgens of the diploids at the exhaustion of york stage and those of the haploids at the same development ages as the diploids. The rusults showed that most internal organs of the haploids were imperfect and the nuclei were small, but the nucleo-cytoplasmic ratio of the cells was normal.