Results 111 to 120 of about 1,598 (179)

Anthropogenic disturbance as a driver of microspatial and microhabitat segregation of cytotypes of Centaurea stoebe and cytotype interactions in secondary contact zones [PDF]

open access: yes, 2017
Background and Aims In a mixed-ploidy population, strong frequency-dependent mating will lead to the elimination of the less common cytotype, unless prezygotic barriers enhance assortative mating.
Bowmann, Gillianne   +8 more
core  

Efficacité de la sélection massale sur les composantes du rendement chez le cocotier [PDF]

open access: yes, 1988
Cet article propose une synthèse permettant d'apprécier chez le cocotier l'efficacité de trois variantes de la sélection massale : fécondation libre, autofécondation ou intercroisement.
Bourdeix, Roland
core  

Analiza niektórych właściwości biologii kwitnienia pszenżyta przydatnych dla hodowli i reprodukcji odmian

open access: yesAgronomy Science, 2004
The aim of this study was the analysis of some characteristics of triticale flowering biology. 36 Polish cultivars of winter triticale were included in this experiment.
Wanda Kociuba, Aneta Kramek
doaj  

Viabilidade "in vitro" de grãos de pólen de bacurizeiro - Clusiaceae "In vitro" viability of "bacury" pollen grains

open access: yesRevista Brasileira de Fruticultura, 2011
O bacurizeiro (Platonia insignis Mart.) é uma frutífera nativa da Amazônia, que apresenta alogamia acentuada e autoincompatibilidade esporofítica. A viabilidade in vitro tem sido utilizada para representar a capacidade potencial do pólen em completar o ...
Francisco De Assis Sinimbú Neto   +2 more
doaj  

Multi-lateral Recognition of PKI Certification Authorities in the Asian Region: Transborder Data Flow and Information Privacy Issues [PDF]

open access: yes, 2005
This article examines the feasibility of multi-lateral recognition of PKI certification authorities in the Asia region. It begins with a review of PKI technologies and the role of certification authorities.
Maurushat, A
core  

Seed germination and seedling allogamy in Rosmarinus officinalis: the costs of inbreeding.

open access: yesPlant biology, 2018
P. García‐Fayos   +2 more
semanticscholar   +1 more source

The European external action service: an opportunity to reconcile development and security policies or a new battleground for inter-institutional turf wars? [PDF]

open access: yes, 2011
“There cannot be sustainable development without peace and security, and without development and poverty eradication there will be no sustainable peace”.
Merket, Hans
core   +1 more source

Pollinator-syndrome driven changes in the mating systems of two Cape legume species [PDF]

open access: yes, 2013
The challenge in answering the question of whether or not plants evolve different mating systems to accommodate their respective pollinators lies in finding a pair of closely related species differing only in pollination syndromes.
Nortje, G
core  

Estudio de la variabilidad genética en habichuela Phaseolus vulgaris L., mediante descriptores morfológicos y bioquímicos

open access: yesActa Agronómica, 2004
Se cuantificó la variabilidad genética de una muestra de 116 accesiones de habichuela P. vulgaris, cultivadas en centros primarios y secundarios de domesticación.
Gutierrez J. A.   +3 more
doaj  

Croisement diallèle entre variétés de cotonniers américains ou africains. Comportement de 6 caractéristiques de la fibre, approche des structures génétiques et implications possibles pour l'amélioration [PDF]

open access: yes, 1976
A la suite d'un croisement diallèle effectué à partir de quatre variétés d'origine africaine et quatre variétés d'origine américaine, six caractères quantitatifs (rendement-fibre, longueur de fibre, indice micronaire, ténacité au stélomètre, ténacité ...
Cateland, B., Schwendiman, Jacques
core  

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