Results 311 to 320 of about 2,077,137 (369)

Osmoxylon‐like fossils from early Eocene South America: West Gondwana–Malesia connections in Araliaceae

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Araliaceae comprise a moderately diverse, predominantly tropical angiosperm family with a limited fossil record. Gondwanan history of Araliaceae is hypothesized in the literature, but no fossils have previously been reported from the former supercontinent.
Peter Wilf
wiley   +1 more source

Phylogenetic relationships and the identification of allopolyploidy in circumpolar Silene sect. Physolychnis

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Species complexes are groups of closely related species with ambiguous delimitation, often composed of recently diverged lineages. Polyploidization and uniparental reproduction (i.e., selfing and apomixis) can play important roles in the origin of species complexes. These complexes pose challenges for species‐based scientific questions,
Anne‐Sophie Quatela   +7 more
wiley   +1 more source

Experiences of women farmworkers in Michigan: Perspectives from the Michigan Farmworker Project

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract Agricultural work presents significant physical and social challenges globally and in the United States, with women farmworkers facing unique risks that remain underexplored. This study examines the social and occupational hazards confronted by women farmworkers in Michigan using data from the Michigan Farmworker Project.
Alexis J. Handal   +3 more
wiley   +1 more source

Brassinolide and BZR1 are up-regulated in a parthenocarpic mutant of prickly pear. [PDF]

open access: yesPlant Cell Rep
Ramakrishnan R   +6 more
europepmc   +1 more source

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