山茶科濒危植物猪血木的花器官发生

Plant Diversity ›› 2007, Vol. 29 ›› Issue (06): 648-654.

山茶科濒危植物猪血木的花器官发生

张瑞菊^{1 , 2} , 马海英¹ , 王跃华¹

1 云南大学生命科学学院, 云南昆明 650091; 2 山东菏泽学院学前教育系, 山东菏泽 274015

收稿日期:2006-12-25 出版日期:2007-12-25 发布日期:2007-12-25
通讯作者: 王跃华

Early Floral Development of Endangered Euryodendron excelsum (Ternstroemioideae: Theaceae)

ZHANG Rui-Ju^{1 , 2} , MA Hai-Ying¹ , WANG Yue-Hua¹

1 College of Life Sciences, Yunnan University , Kunming 650091 , China ;
2 College of Preschool , Heze University , Heze 274015 , China

Received:2006-12-25 Online:2007-12-25 Published:2007-12-25
Contact: WANG Yue-Hua

摘要/Abstract

摘要： 利用扫描电镜首次观察了山茶科极濒危植物猪血木( Euryodendron excelsum) 的花器官发生过程。猪血木的花为两性完全花, 萼片和花瓣均为2􊄯5 螺旋向心发生, 单轮排列, 且有逆时针和顺时针两种方式。雄蕊的形成是先形成一个环形分生组织, 然后在环形分生组织上以2􊄯5 螺旋产生5 束雄蕊原基, 每一束雄蕊原基的第一雄蕊原基都是在对萼的位置产生, 其它的雄蕊原基在其两侧产生。3 心皮顺序发生, 愈合成3 室单子房, 柱头平截不裂。猪血木与山茶亚科的花器官发生明显不同。

关键词: 山茶科, 厚皮香亚科, 猪血木属, 花器官发生

Abstract: The floral development of a critically endangered plant Euryodendron excelsum from Ternstroemioideae (Theaceae) has been observed under scanning electron microscope (SEM) for the first time . The flower of E. excelsum is bisexual and teleianthous . Five sepal primordia are initiated 2􊄯5 spirally and arranged in one whorl when mature , and so are petals. Sepals and petals are initiated in the same order either clockwise or counterclockwise in the same flower . The androecial part is a ring primordium in the beginning . The first five stamen primordia are initiated on this ring primordium at antisepalous positions and then other stamen primordia appear on two sides of each of the first five primordia . Finally a total of 25 stamen primordia are initiated from the ring primordium and arranged in one whorl but could be grouped into 5 fascicles. Three sequentially initiated carpels compose an ovary which has an axile- central placenta with three locules and a truncate
and indehiscent stigma . The floral development of E. excelsum is distinctly different from plants in Theoideae .

Key words: Theaceae

中图分类号:

Q944

张瑞菊1 , 2 , 马海英1 , 王跃华1 . 山茶科濒危植物猪血木的花器官发生[J]. Plant Diversity, 2007, 29(06): 648-654.

ZHANG Rui-Ju^, , MA Hai-Ying , WANG Yue-Hua. Early Floral Development of Endangered Euryodendron excelsum (Ternstroemioideae: Theaceae)[J]. Plant Diversity, 2007, 29(06): 648-654.

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[6]	韦仲新金巧军王红田欣陈书坤. 旌节花科及其相关类群花粉形态的研究[J]. Plant Diversity, 2002, 24(04): 1-3.
[7]	杨俊波　田欣　李德铢　顾红雅　杨世雄　 . 石笔木CHS基因家族成员的分析[J]. Plant Diversity, 2002, 24(02): 1-3.
[8]	韦仲新,金巧军,王红通. 旌节花科及其相关类群花粉形态的研究[J]. Plant Diversity, 2002, 24(01): 1-3.
[9]	周志宏　杨崇仁　　　　　　. 云南普洱茶原料晒青毛茶的化学成分[J]. Plant Diversity, 2000, 22(03): 1-3.
[10]	周志宏，张颖君，杨崇仁. 怒茶素—怒江山茶的一个新黄酮甙[J]. Plant Diversity, 2000, 22(01): 1-3.
[11]	韦仲新,李德铢,樊熙锴,张香兰. 五列本科和肋果茶科花粉外壁超微结构及其与山茶科的系统学关系[J]. Plant Diversity, 1999, 21(02): 1-3.
[12]	王玉国,王青锋,陈家宽,袁秀平. 长喙毛茛泽泻的花器官发生[J]. Plant Diversity, 1998, 20(03): 1-3.
[13]	闵天禄. 云南山茶科新种和新变种[J]. Plant Diversity, 1997, 19(03): 1-3.
[14]	韦仲新. 山茶科花粉超微结构及其系统学意义[J]. Plant Diversity, 1997, 19(02): 1-3.
[15]	杨世雄闵天禄. 山茶科核果茶属、石笔木属和拟核果茶属的分类学位置[J]. Plant Diversity, 1995, 17(02): 1-3.