热带产卡拉胶海藻形态及表皮特征比较  

Comparison of morphological and epidermal characters of different tropical carrageenophyte species

作　　者：庞通[1,2] 刘建国[1] 

机构地区：[1]中国科学院海洋研究所,山东青岛266071 [2]中国科学院研究生院,北京100049

出　　处：《海洋科学》2011年第6期13-18,共6页Marine Sciences

基　　金：国家自然科学基金项目(30771639);国家海洋公益项目(200705010;2012418039)

摘　　要：2008年6月至2009年6月,在山东青岛实验室和海南陵水试验平台,以光学显微镜及电子扫描显微镜等技术,对12种原产印度尼西亚和菲律宾热带产胶红藻外观形态,表皮细胞特征进行了比较。结果表明:1)不同株系藻体呈现褐色、绿色、黄绿色、翡翠绿色、橄榄绿色和咖啡色等多样性;2)在表皮细胞特性方面,5号株系细胞最小、排列最致密、分布最均匀,8号株系细胞最大、胞间距最宽;3)在亚显微结构方面,1号藻呈均一球状突起,2和4号藻为不规则突起,3、6和9号藻表面布满酒窝样凹陷,5和8号藻表面比较平整,7和11号藻呈脑纹状褶皱,12号藻在凹凸结构外覆盖鳞片状白色胶质;4)在实验株中,1、2和4号藻未发现四分孢子,3、5、6、11和12号藻表皮细胞上具有结构对称的四分孢子,且主要分布于较老的主干上;5)在四分孢子排列上,3、5、11和12号四分孢子间排列紧密,6号藻四分孢子间距离较远;6)不同藻的四分孢子囊大小形态存在明显差异,6号藻株四分孢子囊最长,约110μm,5号藻四分孢子囊最短,约40μm,3、11、12号藻四分孢子囊长约60μm,四分孢子囊宽度相对恒定,除5号藻较窄约为10μm外,其他株系均约为15μm。The external forms and characters of epidermal cells in 12 strains of tropical eucheumatoid species were surveyed by means of optical microscope and electronic scanning microscope in Qingdao laboratory and Lingshui experimental platform during the period of June 2008 to June 2009. The results showed： 1） Different strains showed diverse colors ranging from green, yellow-green, emerald green, olive green, to brown and dark brown. 2） Among all the tested stains, strain 5 had the smallest epidermal cell size, most uniform cell distribution and narrowest intercellular space; on the contrary, strain 8 has the largest cell size, and widest intercellular space. 3） As for submi- croscopic structures, uniform globular protuberances in strain 1, irregular protuberances in strain 2 and 4, dimple-like depressions in strain 2, 6 and 9, brain-like folds in strain 7 and 11, relatively smooth surface in strain 5 and 8, and rugged structure covered by white colloidal substances in stain 12 were displayed. 4） Among all the experi- mental strains, tetraspores were found mainly on the old branches of strain 3, 5, 6 11 and 12, however, no tet- raspores was found in strain 1, 2, and 4. 5） All the tetraspores in each strain were symmetrical. The tetraspores in strain 3, 5, 11 and 12 connected closely in contrast to loosen array in strain 6. 6） The size of tetrasporangium in different strains varied significantly. Strian 6 and strain 5 had the longest and shortest tetrasporangium; respectively, which are about 110 μm and 40μm, different from the tetrasporangiums of strain 3, 11 and 12, which were all about 60 μm. Tetrasporangiums of most strains had a fixed 15 μm width except strain 5, which was about 10 μm.

关 键 词：卡拉胶 红藻 表皮细胞 显微结构 四分孢子 

分 类 号：S917.3[农业科学—水产科学]