摘要
在人工培养短叶扭口藓(Barbula tectorum C.Muell.)孢子的基础上,对其孢子萌发、原丝体发育及配子体发生的全过程进行了观察和照相.结果表明:孢子第3天开始萌发,10 d时的孢子萌发率达到90%.孢子萌发后直接产生块状原丝体;块状原丝体上产生轴丝体、绿丝体和次生假根.同时,对短叶扭口藓原丝体发育的特征进行了分析和讨论,并参照Nishida(1978)对藓类植物孢子萌发类型的划分,确定扭短叶口藓孢子萌发类型应属于虎尾藓型(Hedwigia type).
Based on the cultivation of spore germination, protonema growth and gametophore development of Barbula tectorum C. Muell are observed, described and photogarphed. The result shows that spore germination starts on the third day and spore germination reaches 90% on the tenth day. The production of massive protonema immedi ately follows and then caulonema, chloronema and secondary rhizoides. There is an analysis and discussion on the characteristics of protonema growth. With the referfence of the classification of the variations of spore germination by Nishida （1978）, spore germination type of Barbula tectorum C. Muell belongs to hedwigia type.
出处
《华中师范大学学报（自然科学版）》
CAS
CSCD
2008年第3期440-443,共4页
Journal of Central China Normal University：Natural Sciences
基金
河北省科技厅自然科学基金项目(06230156-1)
关键词
原丝体
绿丝体
轴丝体
假根
配子枝原始细胞
protonema
chloronema
caulonema
rhizoides
gametophore primordium
