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马蹄香种子生物学特性研究
赵桦;杨培君;李会宁;
1.陕西理工学院生物系;2.陕西理工学院生物系 陕西汉中723000;3.陕西汉中723000
摘要:
马蹄香的雌蕊子房半下位,心皮6枚,蒴果蓇葖状,果实成熟时沿腹缝线开裂。种子呈三角状倒椭圆形,其背面凸出,具明显横皱纹,腹面凹入。马蹄香种子由种皮、胚乳和胚三部分构成。种皮由多层细胞组成;核型胚乳,种子成熟时游离胚乳核形成胚乳细胞,而胚尚未分化,仍停留在原胚阶段。种子发芽试验表明,马蹄香种子萌发率极低,具有种子休眠的生物学特征。对马蹄香种子的化学成分作了分析研究,种子胚乳中富含营养物质,其中粗蛋白含量为17.3(g/100g)。此外,种子含有丰富的镁、锰、钙、铁、锌等矿质元素。
关键词:  马蹄香    种子结构    生物学特性
DOI:
分类号:
Fund project:陕西省重点实验室专项基金(2001);; 陕西省自然科学研究计划项目(2003C102)资助~~
Abstract:
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