【摘要】 黄瓜（Ｃｕｃｕｍ ｉｓｓａｔｉｖｕｓＬ．）叶片叶绿体中铈（Ｃｅ）含量随Ｈｏａｇｌａｎｄ 培养液中ＣｅＣｌ３ 浓度的增加而增加。Ｃｅ 对黄瓜叶片Ｃｈｌａ／ｂ 比值的影响与光强度有关，当植株生长在强光下，对照和处理叶片的Ｃｈｌａ／ｂ 比值均为３．０７；但在弱光下对照叶片的Ｃｈｌａ／ｂ 比值为２．７２，而处理叶片为２．８６。这说明只有在弱光下Ｃｅ才对叶片色素的组分有影响，Ｃｅ 使叶片中的Ｃｈｌｂ 略有下降。Ｃｅ能促进叶绿体光系统Ⅰ叶绿素蛋白质复合物及１１０ ｋＤ多肽的形成，并使捕光叶绿素ａ／ｂ 蛋白质复合物及其２７ ｋＤ多肽的含量减少。更多还原

【Abstract】 It has been proven that the Ce content of cucumber (Cucumis sativus L.) leaves was enhanced with the increase of CeCl 3 concentration in Hoagland solution.The Chl a/b ratio of cucumber leaves in the control was the same as that in the treated plant, both being 3 67.However, under lower light intensity, the Chl a/b ratio in leaves of the contral was 2 72 whereas that of the treated leaves was 2 86.It showed that only under lower light intensity Ce could decrease the contents of chlorophyll b in leaves.The authors also evidenced that Ce was able to accelerate the formation of chlorophyll protein complexes of PSⅠ and 110 kD polypeptide and decrease the light harvesting complex protein and 27 kD polypeptide.更多还原