Cu2+对鼠尾藻幼孢子体生长的影响

Effect of Cu2+ on growth of Sargassum thunbergii young sporophyte

中文关键词: 鼠尾藻  Cu2+孢子体

英文关键词: Sargassum thunbergii  Copper  Sporophyte

中文摘要:

      以鼠尾藻Sargassum thunbergii幼孢子体为材料，研究了Cu2十对不同生长时期的鼠尾藻幼孢子体生长的影响。不同生长时期的鼠尾藻幼孢子体对微量以鼠尾藻Sargassum thunbergii幼孢子体为材料，研究了Cu2十对不同生长时期的鼠尾藻幼孢子体生长的影响。不同生长时期的鼠尾藻幼孢子体对微量Cu2十都是敏感的。对于早期的鼠尾藻幼孢子体，5ug/L以上的铜浓度对其正常生长不利，当Cu2十处理浓度达到或超过250ug/L时，该时期幼孢子体即基本停止生长。对于后期的鼠尾藻幼孢子体，10ug/L以上的Cu2十浓度对其正常生长不利，1ug/L的Cu2十浓度对其生长有促进作用，当Cu2十处理浓度达到或超过50ug/L时，该时期幼孢子体增长缓慢或基本停止生长。假根由于结构和功能特性，对铜的敏感程度不大，铜处理初期依然表现出快速增长。

英文摘要:

      The effect of Cu2+ on the growth of argassum thunbergii argassum thunbergii different growth periods of Syoung sporophyte was investigated. Both early and late Sargassum thunbergii young sporophyte were very sensitive to Cu2+. For early Sargassum thunbergii young sporophyte, Above 5 ug/Lof Cu2+ concentration, growth of young sporophytes were seriously inhibited. when Cu2+ concentration reach or exceed 250ug/L, young sporophytes could hardly grow. For late Sargassum thunbergii, Above 10 ug/Lof Cu2+ concentration, growth of young sporophytes were seriously inhibited. 1ppb of Cu2+ concentration accelerated the growth. 50 ug/L and higher concentrations of Cu2+ made the young sporophytes grow slowly or cease to grow. Due to the special structure and function characteristics, rhizoid was not sensitive to Cu2+. At the beginning of Cu2+ treatment, rhizoid still presented fast growed.