Demes: A Suggested New Terminology

Gilmour, J. S. L.; Gregor, J. W.

doi:10.1038/144333a0

Cited by 107 publications

(38 citation statements)

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“…The term ' population' is used in the first instance simply to refer to a collection of individuals from a given locality, i.e. a topodeme in the sense of Gilmour and Gregor (1939). No initial assumption was made regarding the breeding patterns or morphology of these groups.…”

Section: Scoring and Data Analysismentioning

confidence: 99%

GENECOLOGICAL STUDIES OF URTICA DIOICA L.

Pollard

Briggs

1982

New Phytologist

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SUMMARYUrtica dioica L. shows considerable variation in several characters, including stinging hair density. Members of a particular population found at Wicken Fen are remarkable in that they bear almost no stinging hairs, are tall, unbranched, narrow-leaved, and late-flowering. Experimental cultivation of samples from Wicken and a number of other populations showed that:(i) Plants retain many of their distinctive features in cultivation.(ii) Some of the variation is apparently heritable.(iii) There are significant differences between and within populations and between staminate and pistillate plants. (iv) Plants differ in their pattems of phenotypic plasticity. The complexity of variation examined here renders infraspecific taxonomy difficult, but provides a fertile area for research on the ecological and evolutionary significance of variation in U. dioica.

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Section: Scoring and Data Analysismentioning

confidence: 99%

GENECOLOGICAL STUDIES OF URTICA DIOICA L.

Pollard

Briggs

1982

New Phytologist

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“…The small populations fragmented gradually, colonized the most favourable sites and thus became separated by ecologically unfavourable areas. The period of isolation was followed by the fragmentation into still smaller populations, or the so-called demes (Gilmour, Gregor, 1939).…”

Section: Resultsmentioning

confidence: 99%

Serbian spruce (Picea omorica/Panc./Purkyne) variability in the artificial populations in Serbia

Isajev¹,

Lavadinović²,

Lučić³

et al. 2013

Ekologia

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Isajev V., Lavadinović V., Lučić A., Rakonjac L.J.: Serbian spruce (Picea omorca /Panc./ Purky ne) variability in the artificial populations in Serbia. Ekológia (Bratislava), Vol. 32, No. 3, p. 277-282, 2013. A great part of the genetic variation and the potentials of Serbian spruce natural populations have been incorporated in several plantations in the Western Serbia at the site Quercetum fraineto-cerris s.l., Salicetum fragillis s.l and Pinetum nigre s.l. and in other similar occurrences In this way, it becomes much more available for the research and future utilization. The intensive research of the plantations started by the classification of trees into phenogroups which were considered to be significant for forestry and horticulture. The differences between flowering years, plantations and individual trees in the regularity and abundance of micro-and macro-strobiles are major indicators f genetic variability in the reproductive cycle of Serbian spruce. The interaction of environmental characteristics and genotypes of extreme and average trees illustrate the reproductive ability of Serbian spruce on different sites and indicates that this species achieves the coenological and not the ecological optimum at its natural sites. Application of genetic/selection programmes can lead to the production of planting stock of desired and defined properties, which could survive the stress environmental factors, thanks to its morphological and physiological properties.

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“…Ces populations mendéliennes sont des constructions mathématiques indispensables aux généticiens des populations ; elles ne préjugent en rien de l'organisation réelle des individus d'une espèce dans leurs divers habitats. Les généticiens des populations ont aussi introduit le concept de population locale, de voisinage ou de dème 2 , entités relativement isolées des autres entités par rapport à la reproduction et à la dispersion des individus (Gilmour et Gregor, 1939 ;Wright, 1943). Leurs limites spatiales reposent essentiellement sur les capacités dispersives des individus.…”

Section: Les Définitions D'une Populationunclassified

La notion de population en dynamique et génétique des populations

Debouzie

1999

Nature Sciences Sociétés

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Demes: A Suggested New Terminology

Cited by 107 publications

References 0 publications

GENECOLOGICAL STUDIES OF URTICA DIOICA L.

GENECOLOGICAL STUDIES OF URTICA DIOICA L.

Serbian spruce (Picea omorica/Panc./Purkyne) variability in the artificial populations in Serbia

La notion de population en dynamique et génétique des populations

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