コンブ目植物数種の配偶体の成長・成熟,胞子体(幼葉)の成長に及ぼす光質・光量の影響

概要

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Cultures for the gametophytes of Ecklonia kurome, Undaria pinnatifida, Eisenia bicyclis, and Ecklonia cava and the young sporophytes of E. kurome and U. pinnatifida were developed in order to study the influence of light quality and quantity on gametophyte growth and fertility, as well as sporophyte growth. Red, green, blue, and white fluorescent light was used in varying degrees of quantum irradiance. The results confirmed nearly identical tendencies for all species examined. That is, the growth of both gametophytes and sporophytes was most pronounced under blue light, followed by good growth under white and green light, with red light showing the poorest results. Fertility of gametophytes developed most quickly under blue light, and could be seen to develop more slowly under white light. Fertility showed a tendency toward delay under green and red light. Also, male and female gametophytes of Ecklonia kurome, which is distributed in deeper water at 7-20m, became fertile in lower quantum irradiance than in the gametophytes of Undaria pinnatifida and Eisenia bicyclis growing in shallow water down to 7m.
日本水産學會の論文