Parthenogenesis,apogamy and apospory in Alaria crassifolia (Laminariales) |
| |
Authors: | H Nakahara Y Nakamura |
| |
Institution: | (1) Institute of Algological Research, Faculty of Science, Hokkaido University, Bokoiminamimachi, Muroran, Japan;(2) Present address: Department of Fisheries Faculty of Agriculture, Kyoto University, Kyoto, Japan |
| |
Abstract: | In cultures of Alaria crassifolia Kjellman, unfertilized eggs developed normally into haploid sporophytes which differentiated into a holdfast, stipe and blade with a midrib. The terminal cells of a male gametophyte grew apogamously into haploid sporophytes with narrow blades which lack the midrib. Further, diploid gametophytes were formed by apospory from vegetative cells of a diploid sporophyte. They were monoecious and their fertilized eggs developed into tetraploid sporophytes. Nuclear phases of the sporophytes and gametophytes concerned were confirmed by cytological observations.This work was supported by Grant No. 38803 from the Ministry of Education of Japan. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|