Soltis D E,Johnson L A,Looney C.Discordance between ITS and chloroplast topologies in the Boykinia group (Saxifragaceae)〔J〕.Systematic Botany,1996,21:169-185.
[5]
Doyle J J,Doyle J L.A rapid DNA isolation procedure for small quantities of fresh leaf material〔J〕.Phytochemical Bulletin,1987,19:11-15.
[6]
Kang Y,Zhang M L,Chen Z D.A prelimnary phylogenetic study of subgenus Pogonphace(Astragalus) in China based on ITS sequence data〔J〕.Acta Botanica Sinica,2003,45(2):140-145.
[7]
Oxelman B,Liden M,Berglund D.Chloroplast rpSl6 intron phylogeny of the tribe Sileneae(Caryophyllaceae)〔J〕.P1ant Systematics and Evolution,1997,206:393-410.
[8]
Thompson J D,Gibson T J,Plemniak F,et al.The clustal X windows interface:Flexible strategies for multiple sequence alignment aided by quality analysis tools〔J〕.Nucleic Acids Research,1997,25:4 876-4 882.
[9]
Posada D.jModelTest:Phylogenetic model averaging〔J〕.Molecular Biology and Evolution,2008,25:1 253-1 256.
[10]
Swofford D L.PAUP*:Phylogenetic Analysis Using Parsimony(*and Other Methods):Version 4.0b10〔M〕.Sunderland:Sinauer Associates,2002.
[11]
Felsenstein J.Confidence limits on phylogenies:an approach using the bootstrap〔J〕.Evolution,1985,39(4):783-791.
[12]
Gutterman Y.Survival Strategies of Annual Desert Plants〔M〕.Berlin:SpringerVerlag,2002.
[13]
Ma W B,Zhao X J,Tan D Y,et al.Nutlet dimorphism in individual flowers of two cold desert annual Lappula species (Boraginaceae):Implications for escape by offspring in time and space〔J〕.Plant Ecology,2010,209:361-374.