Results 31 to 40 of about 5,171,142 (323)
Global to local genetic diversity indicators of evolutionary potential in tree species within and outside forests [PDF]
, 2014 There is a general trend of biodiversity loss at global, regional, national and local levels. To monitor this trend, international policy processes have created a wealth of indicators over the last two decades.
Aravanopoulos, F. +8 more
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Taxonomy and Identification of Principal Foliar Nematode Species (Aphelenchoides and Litylenchus)
Plants, 2020 Nematodes are Earth’s most numerous multicellular animals and include species that feed on bacteria, fungi, plants, insects, and animals. Foliar nematodes are mostly pathogens of ornamental crops in greenhouses, nurseries, forest trees, and field crops ...
Zafar Handoo, Mihail Kantor, Lynn Carta
doaj +1 more source
Top Ten Most Important U.S.-Regulated and Emerging Plant-Parasitic Nematodes
Horticulturae, 2022 Plant-parasitic nematodes (PPNs) are important pests that cause an estimated ten billion dollars of crop loss each year in the United States and over 100 billion dollars globally.
Mihail Kantor +3 more
doaj +1 more source
Environmental factors influence both abundance and genetic diversity in a widespread bird species. [PDF]
, 2013 Genetic diversity is one of the key evolutionary variables that correlate with population size, being of critical importance for population viability and the persistence of species. Genetic diversity can also have important ecological consequences within
Boettcher R. +8 more
core +3 more sources
Genome analysis of the ubiquitous boxwood pathogen Pseudonectria foliicola [PDF]
PeerJ, 2018 Boxwood (Buxus spp.) are broad-leaved, evergreen landscape plants valued for their longevity and ornamental qualities. Volutella leaf and stem blight, caused by the ascomycete fungi Pseudonectria foliicola and P.
Yazmín Rivera +4 more
doaj +2 more sources
Recombination and Genetic Diversity
Trends in Computational and Applied Mathematics, 2012 In this paper we present a spatial stochastic model for genetic recombination, that answers if diversity is preserved in an infinite population of recombinating individuals distributed spatially. We show that, for finite times, recombination may maintain all the various potential different types, but when time grows infinitely, the diversity of ...
Coutinho, T. C. +2 more
openaire +6 more sources
PhytoFrontiers, 2022 There are approximately 700 obligate biotrophic species grouped into 20 genera (Oomycota, Peronosporaceae) that cause downy mildew diseases. In 2001, Dick hypothesized that diversification of downy mildew species was driven in part by host plant ...
William J. Davis, Jo Anne Crouch
doaj +1 more source
Spectrum of genetic diversity and networks of clonal organisms [PDF]
Journal of the Royal Society Interface, 4, 1093-1102 (2007), 2006 Clonal organisms present a particular challenge in population genetics because, in addition to the possible existence of replicates of the same genotype in a given sample, some of the hypotheses and concepts underlying classical population genetics models are irreconcilable with clonality.
arxiv +1 more source
Benefits of host genetic diversity for resistance to infection depend on parasite diversity [PDF]
, 2010 Host populations with high genetic diversity are predicted to have lower levels of infection prevalence. This theory assumes that host genetic diversity results in variation in susceptibility and that parasites exhibit variation in infectivity. Empirical
Ebert, D., Ganz, H.
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Nation Formation and Genetic Diversity [PDF]
SSRN Electronic Journal, 2006 This paper presents a model of nation formation in which culturally heterogeneous agents vote on the optimal level of public spending. Larger nations benefit from increasing returns in the provision of public goods, but bear the costs of greater cultural heterogeneity. This tradeoff induces agents' preferences over different geographical configurations,
Desmet, Klaus +3 more
openaire +6 more sources