中华缩叶藓孢子萌发与原丝体发育特征研究

通过室内人工培养中华缩叶藓的孢子,在光学显微镜下详细观察了其孢子萌发、原丝体发育及配子体发生的全过程.结果表明:中华缩叶藓的孢子在壁内萌发,随后分裂产生块状原丝体;块状原丝体上可产生两种丝状体,一种是具疣的棒状原丝体,另一种是由长圆柱状细胞组成的轴丝体;配子体原始细胞只产生于块状原丝体上.根据中华缩叶藓的孢子萌发和原丝体发育特征,并参照Nishida对藓类植物孢子萌发类型的划分,确定中华缩叶藓的萌发孢子型应属于缩叶藓型(Ptychomitrium-type).

Characteristics of Spore Germination and Protonemal Development in Ptychomitrium sinense

Light microscope was employed to observe spore germination,protonemal development,gametophyte differentiation of Ptychomitrium sinense indoor cultured.The results showed that in P.sinense,the spores germinate inside their exospores and then divide into massive protonemata;the massive protonemata can form two kinds of protonemata of which one is clubbed protonema with papillae,and the other is caulonema composed of long and cylindrical cells;the gametophyte archaeocytes only occur on the massive protonemata.According to the characteristics of spore germination and protonemal development P.sinense is confirmed in P.sinense and in accordance with Nishida classification of spore germination types of moss plants to belong to Ptychomitrium-type.