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Registros recuperados: 8
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Agronomic evaluation of Paspalum notatum Flügge under the influence of photoperiod R. Bras. Zootec.
Machado,Juliana Medianeira; Dall'Agnol,Miguel; Motta,Eder Alexandre Minski da; Pereira,Emerson André; Simioni,Carine; Weiler,Roberto Luis; Zuñeda,Marcos Perera; Ferreira,Priscila Becker.
ABSTRACT The objective of this study was to evaluate the influence of photoperiod on the forage yield by ecotypes and intraspecific hybrids of P. notatum. Tetraploid ecotypes from the United States Department of Agriculture and the National University of the Northeast in Argentina, in addition to six intraspecific hybrids, totaling 19 ecotypes, were assessed. The materials evaluated were subjected to an extended photoperiod (14 h of light) and natural photoperiod from July 2011 to October 2012. The experimental design was a completely randomized factorial scheme of 19 × 2 (ecotypes × photoperiod) consisting of five replicates. The materials were influenced differentially by the variation in photoperiod, with one group showing high sensitivity, whereas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecotypes; Forage yield; Hybrids; Subtropical grass.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000100008
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Application of ecoTILLING to relate molecular variation in a rice ethylene response factor (ERF3) gene to drought stress responses International Rice Research Institute
Wang, Hehe.
xi, 86 leaves : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Plant genetics; Genes; Ethylene; Drought tolerance; Ecotypes; Breeding methods; Mutagenesis.
Ano: 2005 URL: http://hdl.handle.net/123456789/348
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Mitochondrial patterns of intra- and interspecific differentiation among endemic freshwater crabs of ancient lakes in Sulawesi Naturalis
Schubart, C.D.; Santl, T.; Koller, P..
Due to their long-term ecological stability, ancient lakes represent very interesting systems for studying differentiation and speciation processes. High degrees of endemism and specialisation are characteristic features of their fauna. The Malili lakes from the Indonesian island Sulawesi are considered an ancient limnic system, and recent research has increased the number of recognized species and the knowledge about ecological and morphological diversification within a variety of animal taxa. Here we show that the local endemic gecarcinucid freshwater crabs are more differentiated than qualitative morphological characters and the current taxonomy may indicate. The morphologically and ecologically well characterised species Nautilothelphusa zimmeri Balss,...
Tipo: Article / Letter to the editor Palavras-chave: Species flock; Adaptive radiation; Ecotypes; Morphotypes; Genetic barcoding; Cox1 mtDNA; 42.74.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/280475
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Morphological and growth responses to water stress of two sub-populations of Bromus pictus from soils with contrasting water availability RChHN
ROTUNDO,JOSÉ L; CIPRIOTTI,PABLO A; GUNDEL,PEDRO E.
We studied morphological and growth responses to drought of two sub-populations of Bromus pictus from communities with soils with different water availability from the Patagonian steppe. After a process of acclimatization common to both sub-populations, individuals from both sub-populations were subjected to three levels of water availability during 44 days. Independently of the water availability treatment, the sub-population from the community of high soil water availability showed higher aboveground relative growth rate (RGR) and higher leaf size (area and weight) compared to the sub-population from the community of low soil water availability. These results prove the expected evolution of higher growth rates and leaf sizes in resource rich...
Tipo: Journal article Palavras-chave: Arid lands; Drought; Ecotypes; Genetic variation; Soil depth.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000100006
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Okologische Variabilitat und potentielle Schadlinge der stengelknollchenbildenden tropischen Leguminose Sesbania rostrata International Rice Research Institute
Bodzian, Frank.
87, [11]. : ill. Thesis (Dip. Fachber. Biol.) -- Universitat Giessen
Tipo: Thesis Palavras-chave: Sesbania rostrata; Plant physiology; Plant anatomy; Plant breeding; Genetic variation; Ecotypes; Nitrogen fixation; Green manures; Rice.
Ano: 1988 URL: http://hdl.handle.net/123456789/1236
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Physio-genetic study on rice (Oryza sativa L.) plant type and its interaction with environments using QTL analysis International Rice Research Institute
Kobayashi, Sohei.
xiv, 113 l. : ill. Thesis (Ph.D.) -- Hokkaido University
Tipo: Thesis Palavras-chave: Rice; Plant genetics; Plant physiology; Ecotypes; Environment; Quantitative trait loci.
Ano: 2003 URL: http://hdl.handle.net/123456789/408
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Populational approach in ecophysiological studies: the case of Plathymenia reticulata, a tree from Cerrado and Atlantic Forest Braz. J. Plant Physiol.
Lemos Filho,José Pires de; Goulart,Maíra Figueiredo; Lovato,Maria Bernadete.
The variability of ecophysiological traits among populations can be a result of selection in response to environmental pressure and/or due to random factors, like the genetic drift. The analysis of both genetic and phenotypic variation within populations can lead to better understanding of adaptation in order to colonize different habitats. In the last years we have developed several studies with an widely ecogeographic distributed legume tree species, Plathymenia reticulata, which were focused on identifying specific morphological and physiological traits related to adaptation to the habitats of origin of each studied population. We studied populations from Atlantic Forest, Cerrado and ecotonal sites in relation to phenology, seed morphological traits and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecotypes; Evolutionary ecophysiology; Intraspecific variation; Local adaptation.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000300005
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Potencial plástico de Cabralea canjerana subsp. polytricha (Adr. Juss.) Penn. (Meliaceae) e seu papel na formação de ecótipos em áreas de cerrado e vereda, Uberlândia, MG Rev. Bras. Bot.
FUZETO,ADRIANA PAULA; LOMÔNACO,CECÍLIA.
A formação de ecótipos em Cabralea canjerana subsp. polytricha foi estudada em áreas de cerrado e vereda de uma reserva ecológica no município de Uberlândia, MG, utilizando modelos de genética quantitativa para medida de plasticidade fenotípica. Os ecótipos foram caracterizados quanto à altura dos indivíduos, peso de frutos e sementes, número de sementes viáveis por fruto e sincronização no período de floração. Existe grande variabilidade genética para caracteres importantes na determinação do valor adaptativo da subspécie. Os genótipos respondem fenotipicamente à heterogeneidade ambiental, provocada pelo gradiente cerrado/vereda, em dois dos três caracteres observados. As respostas plásticas foram distintas entre os genótipos, quanto à direção e...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cabralea canjerana; Ecotypes; Phenotypic plasticity; Quantitative genetics.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000200007
Registros recuperados: 8
Primeira ... 1 ... Última
 

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