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滇产菟丝子种子形态的观察
郭凤根; 李扬汉;
1.云南农业大学农学院!云南昆明650201;2.南京农业大学农学系!江苏南京210095
摘要:
应用解剖镜和扫描电镜观察了产于云南的 3种 12份菟丝子的种子形态 ,结果如下 :( 1)大花菟丝子种脐线形或弧形凹陷 ,晕轮椭圆形具网状纹饰 ,种皮具条状纹饰 ,条纹宽大呈块状 ,绞链状连接 ,排列致密 ;( 2 )中国菟丝子的种脐呈衣领状突起 ,晕轮圆形具不规则网状纹饰 ,种皮具复网状纹饰 ;( 3)日本菟丝子的种脐线形或弧形凹陷 ,晕轮圆形至椭圆形 ,具规则的网状纹饰 ,种皮具规则条状纹饰或网状纹饰 ,条纹狭长 ,排列稀疏 ;( 4 )种子形态不仅可用于菟丝子种及变种的检疫和鉴定 ,而且支持形态聚类分析所得结论。
关键词:  滇产菟丝子  大花菟丝子  中国菟丝子  日本菟丝子  种子形态  
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