Genetic Structure
Mostrando 13-24 de 2782 artigos, teses e dissertações.
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13. Genetic diversity in Calibrachoa pygmaea (Solanaceae): A hawkmoth-pollinated nightshade from the Pampas
ABSTRACT Calibrachoa pygmaea is a unique species of Calibrachoa, especially concerning its flower morphology and the environment where it occurs. The species is self-incompatible and is narrowly distributed in wet and flooded fields of the Pampas region. We characterize the genetic diversity of the species based on traditional plastid markers and newly devel
Acta Bot. Bras.. Publicado em: 07/10/2019
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14. Engineering biodiversity as a model for the species conservation
Abstract: Early humans have domesticated plant and animal species based on ancient empirical concepts (Darwin 1868, 1876). In 1886, Mendel established a new paradigm of hereditary laws (Mendel 1866, 1870, 1950) based on genotypic and phenotypic traits of cross-compatible species, establishing a complex breeding technology that is currently utilized for the d
An. Acad. Bras. Ciênc.. Publicado em: 30/09/2019
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15. Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings
Resumo As plantações florestais estabelecidas com mudas apresentam heterogeneidade e dificuldades de manejo. Assim, uma alternativa a estes obstáculos é o uso de clones com alta produtividade. Além disso, as plantas clonais diferem das plantas seminíferas na estrutura do sistema radicular, o que pode influenciar a eficiência na absorção de água e d
Ciênc. Florest.. Publicado em: 30/09/2019
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16. Population Structure and Genetic Diversity of Sweet Cassava Accessions from the Midwestern, Southeastern and Southern Regions of Brazil
Abstract The objective of this work was to screen sweet cassava accessions collected in smallholding areas in the Midwestern, Southeastern and Southern regions of Brazil, using 15 SSR molecular markers, to determine population structure and genetic diversity. Polymorphism was detected in every loci analyzed, with mean of 6.33 alleles per locus, and mean poly
Braz. arch. biol. technol.. Publicado em: 05/09/2019
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17. Diagnostic fingerprints ISSR/SSR for tropical leguminous species Stylosanthes capitata and Stylosanthes macrocephala
ABSTRACT: Stylosanthes capitata Vogel and Stylosanthes macrocephala M.B.Ferreira & Sousa Costa are two forage leguminous species of agronomic importance for animal husbandry in tropical environments. The physical mixture of both species (80 % S. capitata and 20 % S. macrocephala) comprises the commercial cultivar “Estilosantes Campo Grande”. However, pro
Sci. agric. (Piracicaba, Braz.). Publicado em: 05/09/2019
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18. X-ray Microtomography to Quantify Morphological Sandstones Properties
Abstract The sandstones of the Furnas Formation in the State of Paraná, south of Brazil, are located in regions with great importance due to the natural heritage found in the rocky forms and associated flora and fauna. This paper presents a detailed analysis of the internal structure of diverse sandstones of the Furnas Formation. X-ray microtomography allow
Braz. arch. biol. technol.. Publicado em: 12/08/2019
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19. Genetic evidence of multiple reproductive strategies in a microendemic and threatened cactus (Cactaceae: Discocactus Pfeiff) in Bahia, Brazil
ABSTRACT Discocactus zehntneri subsp. petr-halfari, an endangered taxon, is represented by a single population in an anthropized area of Bahia, Brazil, where it is suffering due to extreme extractivism. Thus, information about this cactus, such as its reproductive patterns, is urgently needed to support conservation strategies. A population genetics approach
Acta Bot. Bras.. Publicado em: 18/07/2019
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20. Characterization of pepper accessions using molecular markers linked to pungency and SSR
RESUMO Pimentas do gênero Capsicum possuem grande importância socioeconômica, sendo a pungência seu principal atrativo. A caracterização da pungência, as estimativas de distâncias genéticas e a análise da estrutura populacional entre os acessos pertencentes a Bancos de Germoplasma são importantes para seleção de genitores que permitam obtenção
Hortic. Bras.. Publicado em: 18/07/2019
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21. Simulation of pattern of gene flow in Canjerana fragments in the Brazilian Atlantic Rainforest for evaluating genetic conservation strategies
RESUMO: O fluxo gênico, cuja efetividade é função do modelo e da taxa, assume especial importância na conservação de recursos genéticos por permitir a conectividade de populações isoladas geograficamente, sujeitas à redução da variabilidade genética. O entendimento de como o fluxo gênico ocorre pode contribuir no planejamento de ações para
Cienc. Rural. Publicado em: 15/07/2019
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22. Population genomics and gene introgression in goat herds naturally adapted to Brazil
RESUMO Objetivou-se aplicar Chip SNP caprinos 50 K da Illumina para analisar a estrutura genômica populacional em dois rebanhos de caprinos Marota, um particular e outro de conservação oficial, localizados no Piauí, e na investigação de indícios de erosão genética provocada pela raça Anglonubiana nesses rebanhos. Para isso, 86 animais Marota e 10 A
Rev. Ciênc. Agron.. Publicado em: 04/07/2019
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23. Identification of duplicates in cassava germplasm banks based on single-nucleotide polymorphisms (SNPs)
ABSTRACT: Genetic redundancy in cassava (Manihot esculenta Crantz) presents a challenge to efficient management of genetic resources. This study aimed to identify and define the genetic structure of duplicates in cassava germplasm from various Embrapa research units, using single-nucleotide polymorphism (SNP) markers. We evaluated 2,371 accessions with 20,71
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-07
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24. Biochemical and Biological Properties of Soil from Murundus Wetlands Converted into Agricultural Systems
ABSTRACT The implementation of conservationist systems that improve soil properties and reduce the impacts of the conversion of native areas is fundamental for feasible agricultural exploitation. This study aimed to evaluate the impact on soil biological properties caused by the conversion of murundus fields into agricultural systems and verify the ability o
Rev. Bras. Ciênc. Solo. Publicado em: 19/06/2019