【摘要】 观察研究了偏心海链藻（Ｔｈａｌａｓｓｉｏｓｉｒａ　ｅｃｃｅｎｔｒｉｃａ）壳面形态的变异及变异 的原因。结果表明，壳面形态变异是偏心海链藻的典型特征，依变异程度不同可分 为４种类型；硅含量对其壳面形态影响显著，但硅质不足不是形态变异的唯一原 因。更多还原

【Abstract】 In our experiment, the valve morphological variation of Thalassiosira eccentrica was observed and its origination was studied. Results showed that valve morphological varistion, which is divided into 4 types according to variation degrees, is typical feature of T. eccentrica. Silicate content has remarked effect on the valve pattern, but silicate limitation is not the sole factor.更多还原