海南省4种江蓠属(红藻门)海藻的形态分类学研究

doi:10.11978/2017118

摘要/Abstract

摘要：

利用形态学和解剖学方法, 对采自海南省东南和西南沿海的大型海洋红藻江蓠属(Gracilaria)进行了分类学研究。经鉴定, 共发现4个物种, 即凤尾菜G. eucheumoides、芋根江蓠G. blodgettii、缢江蓠G. salicornia和刺边江蓠G. spinulosa。文章对此4种江蓠的内、外部形态特征进行了较详细描述与介绍。结合生物冷冻切片技术, 获得了各个物种的比较清晰的解剖学特征图片。其中, 缢江蓠藻体表面瘤状突出物, 与其他文献报道的同体蓠生藻Gracilariophila deformans Weber-van Bosse相一致。

关键词: 海南省, 红藻门, 江蓠属, 形态学

Abstract:

According to the morphological and anatomical procedures, the marine red algal genus Gracilaria was studied using the samples collected from the southeastern coast of Hainan province, China. Four species were identified, namely, Gracilaria eucheumoides, G. blodgettii, G. salicornia, and G. spinulosa. Their morphological characteristics were described in detail. Combined with the Cryo-sectioning Technique, the anatomical figures of all species were obtained, including distinctive cystocarps of Gracilariophila deformans on G. salicornia. These findings provide science and technology support for the protection and utilization of these resources in Hainan province, China.

Key words: Hainan province, Rhodophyta, Gracilaria, Morphology

中图分类号:

P735.531

李永梅, 刘瑞, 杨楠, 丁兰平, 黄冰心, 王艺晓, 陈彦伟. 海南省4种江蓠属(红藻门)海藻的形态分类学研究[J]. 热带海洋学报, 2018, 37(4): 29-37.

Yongmei LI, Rui LIU, Nan YANG, Lanping DING, Bingxin HUANG, Yixiao WANG, Yanwei CHEN. Morphological taxonomy of four species of genus Gracilaria (Gracilariaceae, Rhodophyta) from Hainan Province, China[J]. Journal of Tropical Oceanography, 2018, 37(4): 29-37.

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结构	物种
结构	刺边江蓠	团集江蓠	样品
高	6~11.5cm	4~4.5cm	2.5~4cm
宽	0.5~1.2cm	1~2mm	1.5~6mm
体厚	415~448μm	448~481μm	330~450μm
胶质层	6~9μm	6~9μm	6~11μm
表层细胞	2层; (7~10)μm×(3~7)μm	1~2层; (3~6.6)μm×(5~6)μm	1~2层; (4~8.5)μm×(5.5~8.5)μm
内皮层细胞	20~40μm	(20~26)μm×(17~20)μm	(17~20)μm×(19~26)μm
髓部细胞	直径132μm; 厚约6μm	(79~145)μm×(73~112)μm; 厚3.3μm	(76~150)μm×(85~170)μm
囊果	1.2mm×1.6mm	未见	(1~1.5)mm×(0.8~1.1)mm
囊果被	12~14层; 厚332~415μm	未见	9~12层; 厚110~280μm
果孢子	17~23μm	未见	10~30μm

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