منابع مشابه
Evolutionary response of landraces to climate change in centers of crop diversity
Landraces cultivated in centers of crop diversity result from past and contemporary patterns of natural and farmer-mediated evolutionary forces. Successful in situ conservation of crop genetic resources depends on continuity of these evolutionary processes. Climate change is projected to affect agricultural production, yet analyses of impacts on in situ conservation of crop genetic diversity an...
متن کاملCrop Ontology: Vocabulary For Crop-related Concepts
A recurrent issue for data integration is the lack of a common and structured vocabulary used by different parties to describe their data sets. The Crop Ontology (www.cropontology.org) project aims to provide a central place where the crop community can gather to generate such standardized vocabularies and structure them into ontologies. Having standardized ontologies opens the world of the Sem...
متن کاملDetecting (trans)gene flow to landraces in centers of crop origin: lessons from the case of maize in Mexico.
There is much discussion of the probability of transgene flow from transgenic crop varieties to landraces and wild relatives in centers of origin or diversity, and its genetic, ecological, and social consequences. Without costly research on the variables determining gene flow, research on transgene frequencies in landrace (or wild relative) populations can be valuable for understanding transgen...
متن کاملOja centers and centers of gravity
Oja depth (Oja 1983) is a generalization of the median to multivariate data that measures the centrality of a point x with respect to a set S of points in such a way that points with smaller Oja depth are more central with respect to S. Two relationships involving Oja depth and centers of mass are presented. The first is a form of Centerpoint Theorem which shows that the center of mass of the c...
متن کاملCrop conundrum.
The lead review “Risk assessment of genetically modified crops for nutrition and health” by Magaña-Gómez and Calderon de la Barca,1 ends with a common plea: “more research is needed”. It is valid to put both this plea and the justification for other similar research into perspective. How selective are the reviews that lead to the conclusion that more of such research is needed?What comparators ...
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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1920
ISSN: 0006-8071
DOI: 10.1086/332658