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Phenology, floral biology and breeding system are described for 14 Piperaceae species at two sites covered by semi-deciduous forest in southeastern Brazil. Flowering occurred continuously throughout the year, with a peak during the windy months. All species had minute odorous and nectarless...
A comparative investigation into nuclear DNA amounts using flow cytometry and video-based Feulgen densitometry was carried out in 289 accessions of 138 different moss taxa (Bryatae), originating from Austria, Switzerland, Spain, Mexico and the USA. Sampling included species from all major moss...
To characterize seasonal patterns of carbohydrate concentrations in Actinidia species from different natural habitats, leaf, fruit and fine root tissue samples from five species ( A. arguta , A. deliciosa , A. chinensis , A. polygama and A. eriantha ) were collected over one season, and analysed...
Nuclei isolated from young leaves were stained with propidium iodide (PI) and their fluorescence intensities were measured by flow cytometry. The ratio of fluorescence intensities of four calibration standards and 34 roses to an internal standard, parsley ( Petroselinum crispum ), provided a...
Mistletoes usually have slower rates of photosynthesis than their hosts. This study examines CO 2 assimilation, chlorophyll fluorescence and the chlorophyll content of temperate host–parasite pairs (nine hosts parasitized by Ileostylus micranthus and Carpodetus serratus parasitized by Tupeia...
Buds of shoots from the trunk, main branches, secondary branches and short branches of 10–21 year-old Nothofagus pumilio trees were dissected and their contents recorded. The number of differentiated nodes in buds was compared with the number of nodes of sibling shoots developed at equivalent...
Native bees are effective pollinators of hot pepper plants, Capsicum annuum . In four gardens in south-central Brazil (Patos de Minas and Brasília) flowers of three cultivars received visits from 16 species of bees in eight genera: Hylaeus (Colletidae), Dialictus , Halictus , Augochlora ,...
Defining ‘plants’ inclusively as ‘photosynthetic eukaryotes’, four basic body plans are identifiable among plant lineages (unicellular, siphonous, colonial and multicellular). All of these body plans occur in most plant lineages, but only the multicellular body plan was carried onto land...
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