Effects of seasonal growth rate on morphological variation of Undaria pinnatifida (Alariaceae, Phaeophyceae)
Effects of seasonal growth rate on morphological variation of Undaria pinnatifida (Alariaceae, Phaeophyceae)
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DOI：
10.1023/a:1017012301314
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发表时间：
1999-04-01
期刊：
影响因子：
2.6
通讯作者：
Brown, MT
中科院分区：
文献类型：
--
作者：
Stuart, MD;Hurd, CL;Brown, MT
Undaria pinnatifida (Harvey) Suringar 目前分为两种形态，f.典型的Yendo。和f。距离宫部和冈村。本研究的目的是确定生长速率的季节变化对 U. pinnatifida 形态的影响，并确定在新西兰奥塔哥港生长的 U. pinnatifida 的形态。从1993年8月到1995年2月每个月测量形态变量（叶柄长度、叶片长度、叶片宽度、孢子叶长度和叶片切口程度）、生长速率（叶、叶片和叶柄）和叶片侵蚀，并使用对应分析进行比较。 U. pinnatifida 形态的变化很大程度上是由不同的生长速率造成的。生长在奥塔哥港的 U. pinnatifida 的形态定义是模棱两可的，因为两种 f. 的形态特征都不同。典型和f.距离在一年中的不同时间展出。
Undaria pinnatifida (Harvey) Suringar is currently divided into two morphological forms, f. typica Yendo. and f. distans Miyabe & Okamura. The objective of this study was to determine the effects of seasonal variation in growth rate on the morphology of U. pinnatifida, and to define the form of U. pinnatifida growing in Otago Harbour, New Zealand. Morphological variables (stipe length, blade length, blade width, sporophyll length and degree of blade incision), growth rates (frond, blade and stipe) and blade erosion were measured each month from August 1993 to February 1995, and compared using correspondence analysis. Variation in the morphology of U. pinnatifida was largely accounted for by varying growth rates. Definition of the form of U. pinnatifida growing in Otago Harbour is equivocal because morphological characteristics of both f. typica and f. distans were exhibited at different times of the year.