نتایج جستجو برای: cardueae

تعداد نتایج: 115  

Journal: :Annals of botany 2011
Alfonso Susanna Mercè Galbany-Casals Konstantyn Romaschenko Laia Barres Joan Martín Núria Garcia-Jacas

BACKGROUND AND AIMS The geographic distribution of the genus Plectocephalus comprises a single species in Ethiopia, two in North America and possibly four more in South America, in a striking disjunction that is exceptional for genera of the tribe Cardueae. The enormity of this disjunction cast doubts on the precise taxonomic delineation of the genus, which is not unanimously recognized as a na...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1995
K J Kim R K Jansen

An extensive sequence comparison of the chloroplast ndhF gene from all major clades of the largest flowering plant family (Asteraceae) shows that this gene provides approximately 3 times more phylogenetic information than rbcL. This is because it is substantially longer and evolves twice as fast. The 5' region (1380 bp) of ndhF is very different from the 3' region (855 bp) and is similar to rbc...

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