%0 Journal Article %T Testing relative evolutionary rates and estimating divergence times among six genera of Rhizophoraceae using cpDNA and nrDNA sequences %A Yang Zhong %A Suhua Shi %A Xianhua Tang %A Yelin Huang %A Fengxiao Tan %A Xiaoyan Zhang %J Chinese Science Bulletin %@ 1861-9541 %D 2000 %I %R 10.1007/BF02884982 %X The molecular phylogenetic trees of 10 species representing 6 genera of the family Rhizophoraceae have been constructed using the sequences of chloroplast genesmatK andrbcL as well as the ITS regions of nuclear ribosomal DNA. Relative-rate tests between lineages in these phylogenetic trees have been performed. On the basis of the results of the relative-rate tests and related molecular evolutionary rate data, the divergence times between the lineages are estimated as follows: (i) the first divergence time in these genera is 132.25 million years ago (mya); (ii) the average divergence time between two tribes, i.e. inland Legnotideae (exceptCarallia brachiata) and mangrove Rhizophoreae, is 64.13 mya; and (iii) the average divergence time between two inland species,C. garciniaefolia andC. pectinifolia, is 19.92 mya. %K Rhizophoraceae %K cpDNA %K nrDNA %K matK %K rbcL %K ITS regions %K relative-rate test %K divergence time %U http://link.springer.com/article/10.1007/BF02884982