Results 81 to 90 of about 4,031,279 (409)
Hummingbirds and the plants they visit in the Tehuacán-Cuicatlán Biosphere Reserve, Mexico
Revista Mexicana de Biodiversidad, 2011 We describe the relative abundance, plant species visited, and plant communities used by hummingbird species inhabiting the Tehuacán-Cuicatlán Biosphere Reserve, a semiarid area in South-central Mexico.
Raúl Ortiz-Pulido +3 more
doaj +1 more source
Horticulturae, 2021 ‘Lingwu Changzao’ (Ziziphus jujuba Mill. cv. Lingwuchangzao), a cultivar of Ziziphus in the Rhamnaceae family, is a traditional jujube cultivar in Ningxia, China.
Yaping Ma +4 more
doaj +1 more source
Group-Theoretical Quantization of 2+1 Geavity in the Metric-Torus Sector [PDF]
J.Math.Phys. 39 (1998) 4824-4848, 1997 A symmetry based quantization method of reparametrization invariant systems is described; it will work for all systems that possess complete sets of perennials whose Lie algebras close and which generate a sufficiently large symmetry groups. The construction leads to a quantum theory including a Hilbert space, a complete system of operator observables ...
arxiv +1 more source
Allelopathic effects of Rumex obtusifolius leaf extracts against native grassland species [PDF]
, 2006 In perennial grasslands R. obtusifolius (broad-leaved dock) is often surrounded by certain plant species. Thus, it is hypothesized for the current study that Rumex can affect their neighbouring plant species by allelopathic interactions.
Zaller, Johann G.
core
Host plant recognition by the root feeding clover weevil, Sitona lepidus (Coleoptera: Curculionidae) [PDF]
, 2004 This study investigated the ability of neonatal larvae of the root-feeding weevil, Sitona lepidus Gyllenhal, to locate white clover Trifolium repens L. (Fabaceae) roots growing in soil and to distinguish them from the roots of other species of clover and
Barbosa +8 more
core +3 more sources
Impacts of geopolitics and policy on Latin American biodiversity and water resources
Agribusiness, EarlyView.Abstract Latin America is a major agricultural producer with important natural resources. Efforts have been made to protect sensitive areas but are hindered by agricultural trade disruptions outside the control of individual countries due to globally integrated crop markets.
Jerome Dumortier +2 more
wiley +1 more source
, 2013 Phytophthora cinnamomi is a necrotrophic pathogen of woody perennials and devastates many biomes worldwide. A controlled perlite-hydroponic system with no other hyphae-producing organisms as contaminants present allowed rapid assessment of ten annual and
M. Crone +3 more
semanticscholar +1 more source
New Phytologist, 2012 • In small isolated populations, genetic drift is expected to increase chance fixation of partly recessive, mildly deleterious mutations, reducing mean fitness and inbreeding depression within populations and increasing heterosis in outcrosses between ...
C. G. Oakley, A. Winn
semanticscholar +1 more source
Functional mapping of seasonal transition in perennial plants [PDF]
Briefings in Bioinformatics, 2014 Unlike annuals, all perennial plants undergo seasonal transitions during ontogeny. As an adaptive response to seasonal changes in climate, the seasonal pattern of growth is likely to be under genetic control, although its underlying genetic basis remains unknown. Here, we develop a computational model that can map specific quantitative trait loci (QTLs)
Yaqun Wang +5 more
openaire +3 more sources
Agribusiness, EarlyView.ABSTRACT Agricultural soils offer great potential for carbon sequestration through humus formation. One way to motivate farmers to build up humus is through humus programs. These are still at an early stage of development, poorly explored, and the number of participating farmers is low. Our aim is to explain the heterogeneity of farmers' willingness to
Julia B. Block +2 more
wiley +1 more source