摘要
旨在根据墙藓属2种藓类植物原丝体发育特征,探析其孢子萌发型与系统发育及生态选择的相关性。通过室内人工培养的方式,对墙藓属无疣墙藓(Tortula mucronifolia Schw gr.)和中华墙藓(Tortula sinensia Broth.)2种藓类植物孢子萌发、原丝体发育及配子体发生过程进行试验研究。结果表明:(1)两种藓类植物孢子均为壁外萌发;(2)无疣墙藓产生由短圆柱状细胞组成的丝状绿丝;中华墙藓产生块状原丝体和不发达的丝状绿丝体;(3)无疣墙藓和中华墙藓的配子体分别在绿丝体和轴丝体上分化产生。参照Nishida对藓类植物孢子萌发型的划分标准,墙藓属无疣墙藓和中华墙藓原丝体发育类型分别为真藓型(Bryum-type)和缩叶藓型(Ptychomitrium-type)。
The processes for spore germination,protonema growth and gametophyte development of two Tortula Hedw.bryophytes Tortula mucronifolia Schw gr.and Tortula sinensia Broth.were studied through artificial culture in laboratory.We founded that:(1)both species were extramural germination;(2)Tortula mucronifolia produced chloronema constituted by cylindric cells,Tortula sinensia produced massive protonema and undeveloped chloronema;(3)for the gametophyte development,gametophytes were derived from chloronema and caulonema for Tortula mucronifolia and Tortula sinensia,respectively.According to the standard of sporeling-type proposed by Nishida,the development types of protonema could be divided into Bryum-type and Ptychomitrium-type in Tortula mucronifolia and Tortula sinensia,respectively.Moreover,the correlation between Sporeling-type and phylogeny as well as ecological selection were explored based on the characteristics of protonema development of the two species.
作者
黄士良
颜丽
金红霞
王明维
王碧雪
李琳
王振杰
HUANG Shiliang;YAN Li;JIN Hongxia;WANG Mingwei;WANG Bixue;LI Lin;WANG Zhenjie(Hebei Women’s Vocational College,Shijiazhuang 050091,China;Hebei Foreign Studies University,Shijiazhuang 050091,China;College of Life Science,Hebei Normal University,Shijiazhuang 050024,China;Hebei College of Industry and Technology,Shijiazhuang 050091,China)
出处
《西北农业学报》
CAS
CSCD
北大核心
2021年第2期271-277,共7页
Acta Agriculturae Boreali-occidentalis Sinica
基金
河北省社会科学基金(HB19SH012)。
关键词
墙藓属
无疣墙藓
中华墙藓
孢子萌发
原丝体发育
配子体发生
Tortula Hedw.
Tortula mucronifolia
Tortula sinensia
Spore germination
Protonema development
Gametophyte development
