ASSESSMENT OF PHOTOSYNTHETIC PERFORMANCE OF PORPHYRA YEZOENSIS (BANGIALES, RHODOPHYTA) IN CONCHOCELIS PHASE
文献类型： 外文期刊
第一作者： Zhu, Jianyi
作者： Zhu, Jianyi;Xu, Pu;Qiao, Hongjin;Xu, Dong;Zhang, Xiaowen;Ye, Naihao;Yang, Wanxin;Liang, Chengwei;Yang, Wanxin
作者机构：
关键词： conchocelis;light absorption;photosynthetic efficiency of PSII;pigment composition;Porphyra yezoensis Ueda
期刊名称：JOURNAL OF PHYCOLOGY （ 影响因子：2.923； 五年影响因子：3.091 ）
ISSN： 0022-3646
年卷期： 2012 年 48 卷 2 期
页码：
收录情况： SCI
摘要： Photosynthetic characteristics of four Porphyra yezoensis Ueda [a taxonomic synonym of Pyropia yezoensis (Ueda) M. S. Hwang et H. G. Choi] strains in conchocelis phase were investigated and compared with one wildtype of P. yezoensis and two strains of Porphyra haitanensis T. J. Chang et B. F. Zheng [a taxonomic synonym of Pyropia haitanensis (T. J. Chang et B. F. Zheng) N. Kikuchi et M. Miyata]. Results showed that experimental strains had higher contents of chl a and carotenoids, but a lower content of total phycobiliproteins than the wildtype. Meanwhile, photochemical efficiency of PSII was measured using pulse amplitude modulation (PAM) fluorometry technology. The value of PSII photosynthetic parameters of P. yezoensis strains were all higher than the wild strain, and the maximal quantum yields (Fv/Fm), effective quantum yields Y(II), and relative photosynthetic electron transport rates (rETR) of P. haitanensis were higher than those of P. yezoensis. The present study verified the possibility of selective breeding of P. yezoensis using the filamentous sporophyte instead of the gametophytic thallus, the advantages being (i) nonrequirement of control of life cycle and (ii) direct and rapid cultivar improvement by artificial selection. We consider the method to be a promising technique for selective breeding of P. yezoensis cultivars.
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