Study on the Characteristics of Protonema Development in Dolichomitriopsis diversiformis A PRELIMINARY STUDY ON SPORE GERMINATION AND PROTONEMA DEVELOPMENT OF SOME CHINESE MOSSES Effect of Three Growth Regulators on Spore Germination,Protonema Development and Bud Differentiation in Entodon challengeri Experimental Studies on the Characteristics of Protonema Development in Encalypta ciliata Characteristics of Spore Germination and Protonemal Development in Ptychomitrium sinense Establishment of In Vitro Regeneration System of the Atrichum Mosses Effects of light and temperatures on spore germination and protonema development of Dolichomitriopsis diversiformis Study on the Characteristics of Protonema Development of Bryum uliginosum