Plant Genetic Breeding
Mostrando 13-24 de 351 artigos, teses e dissertações.
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13. Image phenotyping of lettuce germplasm with genetically diverse carotenoid levels
ABSTRACT Developing biofortified foods such as lettuce is a frequent goal of breeding programs. One obstacle to the success of these efforts is the high temporal and financial cost of determining leaf constituents. Image phenotyping has been increasingly used in crop breeding, but not in lettuce breeding. Until now, the use of image phenotyping to indirectly
Bragantia. Publicado em: 2020-06
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14. A new proposal for the m + a methodology in segregating populations of cowpea
ABSTRACT The evaluation of segregating populations in plant breeding programs is an onerous and time-consuming process. Early identification of populations with genetic potential can be done by m + a methodology. However, the possibility of a modification in the traditional methodology in order to make it more efficient, that is, faster and cheaper, was envi
Bragantia. Publicado em: 2020-06
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15. Morphological characterization and selection of castor bean accessions for mechanized production1
RESUMO A mamoneira (Ricinus communis L.) é uma oleaginosa encontrada em várias regiões do mundo, devido à sua fácil propagação e adaptação. O cultivo de genótipos mais produtivos, resistentes a doenças e que permitem o uso de mecanização traz maior retorno econômico para os produtores. Objetivou-se realizar a caracterização morfológica e sel
Pesqui. Agropecu. Trop.. Publicado em: 25/11/2019
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16. Genetic divergence among eggplant genotypes under high temperatures
RESUMO O objetivo deste trabalho foi estimar a divergência genética entre genótipos de berinjela para caracteres agronômicos, visando gerar informações para a escolha de genótipos em programas de melhoramento genético para tolerância a altas temperaturas. Foram analisados dez caracteres recomendados pelo International Board for Plant Genetic Resourc
Hortic. Bras.. Publicado em: 07/11/2019
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17. Genetic variability revealed by microsatellite markers in a germplasm collection of Jatropha curcas L. in Brazil: an important plant for biofuels
Abstract We evaluated the genetic variability of a collection of Jatropha curcas germplasm, represented by 93 accessions, using microsatellite markers. Among the 60 markers tested, five of them detected polymorphisms, with a total of 11 alleles and mean of 2.2 alleles per loci. These five markers enabled the quantification of genetic variability through esti
Crop Breed. Appl. Biotechnol.. Publicado em: 31/10/2019
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18. Phenotypic Characterization and Genetic Diversity of Sugarcane Varieties Cultivated in Northern Karnataka of India based on Principal Component and Cluster Analyses
Abstract: Sugarcane is a major commercial crop grown in India and across the world. Hence, several elite varieties have been developed now-a-days to overcome many obstacles including abiotic stresses and diseases. The present study was undertaken to screen genetic variation among twenty four sugarcane varieties that are commonly cultivated across Northern Ka
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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19. Genetic diversity among Brazilian okra landraces detected by morphoagronomic and molecular descriptors
ABSTRACT. The conservation of okra landraces [Abelmoschus esculentus (L.) Moench] in gene banks is essential for the success of their use in breeding programmes. This study evaluated the genetic diversity among okra landraces in Brazil based on morphoagronomic descriptors and AFLP markers. We studied 30 accessions of the vegetable gene bank of the Universida
Acta Sci., Agron.. Publicado em: 21/10/2019
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20. GENETIC DIVERGENCE AMONG COWPEA GENOTYPES BY MORPHOAGRONOMIC TRAITS
RESUMO O feijão-caupi possui grande importância socioeconômica, principalmente nas regiões Norte/Nordeste do Brasil. Devido a este fator o melhoramento genético dessa espécie vem se tornando cada vez mais relevante. O trabalho teve como objetivo avaliar a divergência genética entre genótipos de feijão-caupi do Banco Ativo de Germoplasma do Institut
Rev. Caatinga. Publicado em: 21/10/2019
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21. 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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22. Estimates of genetic parameters of pigments and agronomic traits in green and purple lettuce
RESUMO O entendimento da genética e das interações gênicas envolvidas na expressão de determinadas características se torna um fator determinante para a melhor exploração seu uso. Este desconhecimento das bases genéticas envolvidas impacta diretamente no desenvolvimento de programas de melhoramento que aliem uma ou mais características desejáveis
Ciênc. agrotec.. Publicado em: 30/09/2019
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23. Selection of interspecific Psidium spp. hybrids resistant to Meloidogyne enterolobii
ABSTRACT. Since 2001, the disease known as 'guava decline', resulting from the interaction between the phytonematode Meloidogyne enterolobii and the fungus Fusarium solanie, has caused direct and indirect economic losses to the entire guava production chain. Given the lack of sources of resistance in guava genotypes, interspecific hybrids of Psidium spp. wer
Acta Sci., Agron.. Publicado em: 23/09/2019
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24. Plot size for evaluation of Arabica coffee yield
ABSTRACT. In most cases, in genetic breeding of Arabica coffee, plot size is defined in an empirical manner. It is often based only on the experience of the breeders and the availability of resources, potentially leading to a reduction in precision. Therefore, the aim of this study was to estimate the size of the experimental plot for evaluation of coffee yi
Acta Sci., Agron.. Publicado em: 23/09/2019