【摘要】 君子兰是二倍体植物(2n=22),作者用秋水仙碱水溶液处理君子兰种子及幼苗,已获得了四倍体、六倍体植株。试验结果表明:种子以0.05％浓度处理48小时可获得较好诱变效果,诱变率达40％;幼苗以0.2％浓度处理48小时诱导效果最佳,诱导率达42.9％。对诱变植株做了染色体镜检。从已获得的多倍体君子兰材料中有可能选育出符合人们要求的君子兰新品种。更多还原

【Abstract】 Clivia miniata is a plant with a diploid count of 22(2n = 22). Clivia ml-niata plants have been treated to form tetraploid and hexaploid chromo-somal numbers, which has been obtained by treating Clivia miniata seeds and seedling with aqueous solutions of colchicine of various concentra-tions and treating at different times.The results of the experiment show-ed.The. best results were when Clivia miniata seeds and seedlings were treated with 0.05% and 0.2% aqueous solutions of colchicine for fourty eight hours respectively.The ratio of the induction is the former being40% and the latter being 42.9%.The Clivia miniata plants the anther obtained in above-mentioned ex-periments were examined under a microscope to check the chromosome count to verify the polyploidness of the plants.The new plants that have been developed may be able to meet the need of the people for new and distinct gultivars of Clivia miniata.更多还原