Sentences with word «eudicot»

They have alternatively been considered to be close relatives of rosids, asterids, or Santalales and are best regarded at this time simply as one of the major clades of core eudicots (e.g., D. Soltis et al. 2000).
Relationships of Caryophyllales to other major clades of eudicots remain unclear.
«Either the plant was very rare, and we just missed its pollen,» Jud says, «or it's possible that eudicot leaves evolved before (three - pored) pollen did.»
Potomacapnos apeleutheron is the first North American eudicot ever found among geologic deposits 115 to 125 million years old.
Hickey, a former director of Yale's Peabody Museum of Natural History, agreed the plant is an early eudicot.
A technician scraped away clay to reveal compound leaves, which placed the specimen in the flowering plant group known as eudicots.
Comparative analyses of caffeine NMTs demonstrate that these genes expanded through sequential tandem duplications independently of genes from cacao and tea, suggesting that caffeine in eudicots is of polyphyletic origin.
Jim Leebens - Mack from UGA noted that «The Amborella genome sequence facilitated reconstruction of the ancestral gene order in the «core eudicots,» a huge group that comprises about 75 percent of all angiosperms.
Scientists use pollen as a marker of geologic time and environmental conditions, so a change in the evolutionary sequence of eudicots and their pollen could have important implications for many types of analyses.
Yams are monocots, while sweet potatoes are eudicots — they are in totally different botanical families.
The researchers also reconstructed what flowers looked like at all the key divergences in the flowering plant evolutionary tree, including the early evolution of monocots (e.g., orchids, lilies, and grasses) and eudicots (e.g., poppies, roses, and sunflowers), the two largest groups of flowering plants.
As an evolutionary outsider to this diverse group, the Amborella genome allowed the researchers to estimate the linear order of genes in an ancestral eudicot genome and to infer lineage - specific changes that occurred over 120 million years of evolution in the core eudicot.
One feature all eudicots share is the shape of their pollen grains, which have three pores through which the plant's sperm cells are released.
The compound leaves of Potomacapnos apeleutheron identify the 120 million - year - old plant fossil as the earliest known North American member of the eudicots, the largest group of flowering plants.
Today most flowering plants are eudicots, but they were rare in the Early Cretaceous.
However, phylogenetic analyses using many gene sequences place Caryophyllales firmly within the core eudicots.
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