The ecotype concept (Turesson, 1922) is a population concept, and by definition an ecotype is an intraspecific product of environmental selection arising as a result of genotypic response to a particular habitat. Accordingly, before a population qualifies for ecotype status, a relationship must be demonstrated between its heredity and the prevailing ...
J. W. Gregor, Patricia J. Watson
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Changes in Antioxidant Enzymes Activity and Oxidative Damage in Four Argania spinosa Ecotypes Under Water Stress Conditions [PDF]
_Argania spinosa_ L. Skell, a tree endemic of Morocco, grows in semiarid and arid areas. Biochemical response to drought in four ecotypes of the _A. spinosa_ was compared.
Abdelghani Chakhchar +4 more
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Fruit production from Opuntia ficus-indica ecotypes in comparison to commercial Italian clones [PDF]
Fruit production, as an elementary chemical characteristic of the fruit, was evaluated in 16 Opuntia ficus-indica Portuguese ecotypes cultivated in a marginal soil without tillage, in the second and third years after plantation. The O.
Gazarini, Luiz +2 more
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Highly replicated evolution of parapatric ecotypes [PDF]
Abstract Parallel evolution of ecotypes occurs when selection independently drives the evolution of similar traits across similar environments. The multiple origin of ecotypes is often inferred on the basis of a phylogeny which clusters populations according to geographic location and not by the environment they ...
Maddie E. James +5 more
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Effects of Rate of Drying, Life History Phase, and Ecotype on the Ability of the Moss Bryum Argenteum to Survive Desiccation Events and the Influence on Conservation and Selection of Material for Restoration [PDF]
Desiccation stress is frequently experienced by the moss Bryum argenteum and can influence survival, propagation and niche selection. We attempted to disentangle the interacting factors of life history phase (five categories) and rate of desiccation ...
Chiquoine, Lindsay P. +2 more
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Ecotypes of the Mycobacterium tuberculosis complex [PDF]
A phylogeny of the Mycobacterium tuberculosis complex has recently shown that the animal-adapted strains are found in a single lineage marked by the deletion of chromosomal region 9 (RD9) [Brosch et al., 2002. A new evolutionary scenario for the Mycobacterium tuberculosis complex. Proc. Natl Acad. Sci. USA 99 (6), 3684-3689].
Smith, Noel H +8 more
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Studies upon morhological and biological traits of Festuca rubra, subsp.fallax (Poaceae)
Observation and measurements of some traits of Festuca rubra L., subsp. fallax (Thuill.) Hack. ecotypes were made in 1995-1997 using samples selected from natural habitats and collected in Grassland Experimental Station in Sosnowica. High differentiation
Bogusław Sawicki
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Environmental change, especially frequent droughts, is predicted to detrimentally impact the North American perennial grasslands. Consistent dry spells will affect plant communities as well as their associated rhizobiomes, possibly altering the plant ...
Soumyadev Sarkar +12 more
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Temperature, light and nitrate sensing coordinate Arabidopsis seed dormancy cycling resulting in winter and summer annual phenotypes [PDF]
Seeds use environmental cues to sense the seasons and their surroundings to initiate the plants life cycle. Dormancy cycling underlying this process is extensively described, but the molecular mechanism is largely unknown.
Clay, Heather A. +4 more
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Reproductive Activity of Tsigaie Sheep Belonging to the Hill and Mountain Ecotypes
The reproductive value of sheep belonging to the hill and mountain ecotypes of the Tsigaie breed was characterized based on the analysis of specific indexes.
Vasile Miclea +4 more
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