Results 251 to 260 of about 51,734 (306)
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Ecotype, ecospecies, and macroevolution
Experientia, 1948The combined efforts of taxonomists and geneticists have succeeded to a considerable extent in solving that part of the problem of evolution which concerns the subspecific level. The detailed work of innumerable taxonomists following in the footsteps of Kleinschmidt K.
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Weed Science, 1971
Seed of common ragweed (Ambrosia artemisiifoliaL.) ecotypes were collected from 12 locations in North America and were planted at Ithaca, New York. Plants from seed collected in the northern latitudes flowered earlier and produced less vegetative growth.
C. T. Dickerson, R. D. Sweet
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Seed of common ragweed (Ambrosia artemisiifoliaL.) ecotypes were collected from 12 locations in North America and were planted at Ithaca, New York. Plants from seed collected in the northern latitudes flowered earlier and produced less vegetative growth.
C. T. Dickerson, R. D. Sweet
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Science China Earth Sciences, 2020
Prochlorococcus, a group of marine cyanobacteria, is the most abundant and smallest oxygen-producing photosynthetic microorganism. It is mainly distributed in the euphotic zone of tropical and subtropical oceans and is a key participant in the marine biogeochemical cycle.
Wei Yan +4 more
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Prochlorococcus, a group of marine cyanobacteria, is the most abundant and smallest oxygen-producing photosynthetic microorganism. It is mainly distributed in the euphotic zone of tropical and subtropical oceans and is a key participant in the marine biogeochemical cycle.
Wei Yan +4 more
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Nature, 1926
IN Hereditas, Bd. vi. (1925), which has just come to hand, there is an extremely interesting paper by Gote Turesson on “Plant Species in Relation to Habitat and Climate.” This author has grown in Sweden upwards of 10,000 cultures of various types and races of certain widely distributed plants, in order to ascertain the precise nature of the forms ...
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IN Hereditas, Bd. vi. (1925), which has just come to hand, there is an extremely interesting paper by Gote Turesson on “Plant Species in Relation to Habitat and Climate.” This author has grown in Sweden upwards of 10,000 cultures of various types and races of certain widely distributed plants, in order to ascertain the precise nature of the forms ...
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Ecotypic responses of switchgrass to altered precipitation
Functional Plant Biology, 2012Anthropogenic climate change is projected to alter precipitation patterns, resulting in novel environments for plants. The responses of dominant plant species (e.g. Panicum virgatum L. (switchgrass)) to climate changes can drive broader ecosystem processes such as primary productivity. Using a rainfall mesocosm facility, three ecotypes of P.
Jeffrey C, Hartman +2 more
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CHARACTERISATION OF OLIVE WILD ECOTYPES
Acta Horticulturae, 1999Because of the ecosystem characteristics, wild olive varieties (Olea europnea L. var. oleaster Hoff, et Lk.) are widely spread in Sardinia as a typical component of the Mediterranean maquis. In order to obtain more information on the possibility to use wild olives in breeding programs for olive growing a preliminary study was carried out on the genetic
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Ecotype diversification of an abundant Roseobacter lineage
Environmental Microbiology, 2017Summary The Roseobacter DC5‐80‐3 cluster (also known as the RCA clade) is among the most abundant bacterial lineages in temperate and polar oceans. Previous studies revealed two phylotypes within this cluster that are distinctly distributed in the Antarctic and other ocean provinces.
Ying, Sun +3 more
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Control of Johnsongrass Ecotypes
Weed Science, 1971Field experiments were conducted to study the effectiveness of 2,2-dichloropropionic acid (dalapon) for the control of 55 morphologically distinct ecotypes of johnsongrass (Sorghum halepense(L.) Pers.) collected throughout the United States and from several foreign countries.
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Temperature Ecotypes in Seaweeds: Adaptive Significance and Biogeographic Implications
Botanica Marina, 1994We examined the existence of temperature ecotypes in seaweed species from the North Atlantic Ocean belonging to different biogeographic groups. Temperature ranges for survival, growth and reproduction were determined in culture for a total of 68 isolates belonging to 18 species.
Breeman, A. M., Pakker, H.
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Ecotype differentiation in Capsella
Vegetatio, 1990Seed samples were collected from wild populations of Capsella bursa-pastoris growing along a cline from low elevations to the high mountain region in Switzerland and from different latitudes in Scandinavia. Progeny were grown in open-field random block experiments, in transplantation experiments and in growth chambers.
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