作　　者： ;

机构地区： 广东海洋大学水产学院

出　　处： 《海洋湖沼通报》 2007年第4期109-115,共7页

摘　　要： 以细基江蓠（Gracilaria tenuistipitata）的果孢子和四分孢子为实验材料，用不同浓度的（0，0．1，0．5，1，2，4，6mg／L）生长激素2，4-二氯苯氧乙酸（2，4-D）处理刚刚放散的孢子和附着2d孢子，研究其对果孢子和四分孢子附着和生长及存活的影响。与对照组相比，2，4-D使两种孢子的附着量明显降低；2．0～4．0mg／L的2，4-D可以极显著的促进孢子的生长（P〈0．01）；0．1～2．0mg／L的2，4-D提高孢子的存活率（P〈0．01）；6．0mg／L的2，4-D使得孢子的生长和存活率降低。综合以上指标，在细基江篱采孢子育苗时，孢子附着2～3d后用2，4-D处理孢子萌发体，以1．0～2．0mg／L为宜。 The carpospore and tetraspore and spore attached for two day of Gracilaria tenuistipitata were treated at seven different concentrations（0,0. 1,0. 5,1,2,4,6 mg/L） 2,4-D for research on the effects of the agents on their attachment and growth and survival. Attachment of carpospores and tetraspore exposed to 2,4-D was（P〈0.01）significantly lower than control groups spore Growth of spore was significantly greater than when spore was exposed to 2,4-D at a concentration ranging from 2.0 to 4.0mg/L（P〈0. 01） ; 2,4-D at a concentration ranging from 0. 1 to 2.0mg/L was associated with significantly higher survival rate of spore（P〈0.01）; Spore exposed to 2,4-D at a concentration of 6.0mg/L showed significantly reduced growth and survival rate than other groups（P〈0. 01）. Assessment of three norm （attachment, growth, survival）, after spore attached for 2 - 3d, the optimal concentration that treats spore by 2,4-D was 1.0-2.0mg/L.

关 键 词： 细基江蓠 果孢子和四分孢子 二氯苯氧乙酸 生长 存活

领　　域： [农业科学] [农业科学]