DEVELOPMENT OF SUSPENDED CONCHOCELIS OF PORPHYRA HAITANENSIS (BANGIALES, RHODOPHYTA)  

作　　者：汤晓荣 费修绠 

出　　处：《Chinese Journal of Oceanology and Limnology》1998年第4期339-345,共0页中国海洋湖沼学报（英文版）

摘　　要：Ths Mar. 1993 to Aug. 1994 study on suspended conchocelis of Porphyra haitanensisshowed tha there were three pattems for developmnt of vegetative filaments: filaments to filaments by"budding"; filaments to sporangial branchlets by "budding", or cell swelling. There were also three pat-terns for sporangial branchlet development: vegetatively propagting, changing into conbhospores, or dy-ing. Each developmntal stage had one or mere different developmntal directions between vegetative fila-ments and Sporangial branchlets. Developmnts from conchosporangial branchlets to conchospores were se-quential and irreversible. Although sporangial brachlets formed at 29℃ could give rise to filaments, theycould not propagae as healthily under the same condihons as those formed at 25℃ did. Probaby the cru-cial peried of plant cell differenhation is in the late stage of spompal branchlets. In line with the devel-opmental directions of different stages, the authors reghated the developmnt of conchocelis to get idealdifferent developmental smps materials to obtain very develoPmentally homogeneous stages, including fil-aments and sporanglal branchiets.This Mar. 1993 to Aug. 1994 study on suspended conchocelis ofPorphyra haitanensis showed that there were three patterns for development of vegetative filaments: filaments to filaments by “budding”; filaments to sporangial branchlets by “budding”, or cell swelling. There were also three patterms for sporangial branchlet development: vegetatively propagating, changing into conchospores, or dying. Each developmental stage had one or more different developmental directions between vegetative filaments and sporangial branchlets. Developments from conchosporangial branchlets to conchospores were sequential and irreversible. Although sporangial branchlets formed at 29°C could give rise to filaments, they could not propagate as healthily under the same conditions as those formed at 25°C did. Probably the crucial period of plant cell differentiation is in the late stage of sporangial branchlets. In line with the developmental directions of different stages, the authors regulated the development of conchocelis to get ideal different developmental stages materials to obtain very developmentally homogeneous stages, including filaments and sporangial branchlets.

关 键 词：PORPHYRA haitanensis CONCHOCELIS DEVELOPMENT 

分 类 号：P[天文地球]