The dynamics of stem and crown groupsdoi:10.1101/633008Graham E. BuddRichard P. MannCold Spring Harbor Laboratory
as in cacti. Branching stems have been classified either as excurrent, when there is a central trunk and a conical leaf crown, as in firs and other conifers, or as decur-rent (or deliquescent), when the trunk quickly divides up into many separate axes so that the crown lacks a centra...
6. Diversification dynamics of total- stem- and crown-groups are compatible with molecular clock estimates of divergence times [O] . Alan J. S. Beavan, Davide Pisani, Philip C. J. Donoghue 2021 机译:总茎和冠组的多样化动态与分散时钟的分子钟估计相容 7. <みんな>に向かって<書く>と...
Current hypotheses of early tetrapod evolution posit close ecological and biogeographic ties to the extensive coal-producing wetlands of the Carboniferous palaeoequator with rapid replacement of archaic tetrapod groups by relatives of modern amniotes and lissamphibians in the late Carboniferous (about 307...
Plants with crown or root galls grow poorly and their yields are reduced. Infected nursery plants are unsalable. Agrobacteria overwinter in infested soils, where they can live as saprotrophs for a number of years. When nearby susceptible plants are grown in infested soils, the bacterium enters...
These fibrous cells provide mechanical strength and stiffness for the plant stem to support the crown. Simultaneously these hollow cells allow water to flow upwards from roots to leaves. For the aspect of chemistry, the wood is composed of cellulose, hemicelluloses and lignin. These chemicals are...
Taytalura suggests that the strongly evolutionarily conserved skull architecture of sphenodontians represents the plesiomorphic condition for all lepidosaurs, that stem and crown lepidosaurs were contemporaries for at least ten million years during the Triassic, and that early lepidosauromorphs had a ...
Our analyses have yielded six equally most-parsimonious trees in which zegdoumyids represent the earliest offshoots (pectinately arranged) of a large clade that embraces Eocene anomaluroids plus stem and crown Anomaluridae. This phylogenetic assumption underscores the great antiquity of the Anomaluro...
Two books specifically about the Hapsburgs that I had, The House of Habsburg by Adam Wandruszka [Doubleday Anchor, 1965] and The Habsburgs, Embodying Empire by Andrew Wheatcroft [Viking, 1995], were not bad, but incomplete; and the Kingdoms of Europe by Gene Gurney [Crown Publishers, New...
The following canopy structural metrics were utilized in a hierarchical cluster analysis using Ward's method to separate the saplings into groups: primary branch count per unit projected crown area, secondary branch count per unit projected crown area, total branch count per unit projected crown ...