灰藓科4种藓类植物孢子萌发与原丝体发育特征  

Characteristics of Spore Germination and Protonema Development of Four Species in Hypnaceae Family

作　　者：黄士良[1] 贾素巧[1] 王晓蕊 李琳[3] HUANG Shiliang;JIA Suqiao;WANG Xiaorui;LI Lin(Hebei Women's Vocational College,Shjiazhuang 050091,China;College of Resources and Environmental Science,Shijiazhuang University,Shijiazhuang 050035,China;College of Life Science,Hebei Normal University,Shjiazhuang 050024,China)

机构地区：[1]河北女子职业技术学院,石家庄050091 [2]石家庄学院资源与环境科学学院,石家庄050035 [3]河北师范大学生命科学学院,石家庄050024

出　　处：《西北农业学报》2023年第4期622-629,共8页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：河北省自然科学基金(D2019106006,C2019205175);河北省社会科学基金(HB19SH012)。

摘　　要：通过室内人工培养的方式,在微米量级下观察灰藓科灰藓属(Hypnum)灰藓(H.cupressiforme)、黄灰藓(H.pallescens)、多蒴灰藓(H.fertile),金灰藓属(Pylaisia)金灰藓(P.polyantha)4种藓类植物孢子萌发和原丝体发育过程,详细记录其发育过程的性状特征.结果显示:(1)4种藓类植物的孢子均为单细胞,直径平均值为10~40μm.(2)黄灰藓孢子为壁内萌发,灰藓、多蒴灰藓、金灰藓孢子为壁外萌发.4种藓类植物发育初期均未出现初生假根,有次生假根出现.4种藓类植物在发育中出现了块状原丝体和丝状原丝体两种形态,其原丝体在发育初期均没有产生初生轴丝体,均是在原丝体发育后期,轴丝体由绿丝体分化产生.(3)参照Nishida对藓类植物孢子萌发和原丝体发育类型划分标准,对灰藓科4种藓类植物的原丝体发育特征进行归类分析,灰藓属黄灰藓原丝体发育类型为高领藓型(Glyphmitrium-type);灰藓属灰藓、多蒴灰藓,金灰藓属金灰藓3种藓类植物原丝体发育类型均为真藓型(Bryum-type).In order to explore spore germination of Hypnaceae family,the spore germination and pro-tonema development of four species in Hypnaceae,H.cupressiforme,H.fertile,H.pallescens of genus Hypnum and P.poly aril ha of genus Pylaisia were observed and described at the micron level by means of indoor artificial cultivation.The results indicated that;(1)the spores of the four mosses were composed of single cells,with an average diameter of 10-40μm;(2)the spores germinated on inside of the wall in H.pallescens and on outside of the wall in the other three species;(3)the four species had common features during their development,which inculded the appearance of no primary rhizoids,but apearance of secondary rhizoids at the early stage.The appearance of the two forms of massive protonema and filiform protonema produced no primary axonema at the early stage and differ­entiated caulonema from chloronema at the late stage of protonema development;(4)Nishida’s clas­sification standard for moss spore germination,spore germination of the four hypnaceae species were analyzed and determined,the H.pallescens belonged to Glyphmitrium-type and H.cupressi forme,H.fertile and P.polyanlha belonged to Bryum-lype.

关 键 词：灰藓科 孢子萌发 原丝体发育 孢子萌发型 

分 类 号：Q949.35[生物学—植物学]