Selection Gains
Mostrando 1-12 de 141 artigos, teses e dissertações.
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1. Correlation and selection gains in F6 wheat genotypes
ABSTRACT The agronomic traits have complex quantitative inheritance, wheat breeding has a highly cost and time expending to achieve advanced lines, and new cultivars. The objective of this work was to estimate the phenotypic (rp), genotypic (rg) and environmental (re) correlation coefficients and the genetic parameters, as well as to estimate the selection g
Revista Ceres. Publicado em: 2022
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2. Superiority index based on target traits reveals the evolution of Brazilian soybean cultivars over last half-century
ABSTRACT The objective of this work was to assess the breeding influences in different agronomic and physiological traits in Brazilian soybean cultivars, released between 1965 and 2011, to identify traits associated with modern cultivars. A total of 29 cultivars were evaluated in two locations in the 2016/17 crop season. Genotype selection based on agronomic
Rev. Ceres. Publicado em: 2021-08
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3. Selection of Jatropha genotypes for bioenergy purpose: an approach with multitrait, multiharvest and effective population size
ABSTRACT Jatropha curcas L. is a perennial plant with great potential for biodiesel production. Thus, the aim of this study was to select J. curcas genotypes for bioenergy purpose considering multitrait, multiharvest and effective population size. To this end, a data set with 70 J. curcas families, obtained through controlled crosses, evaluated in a randomiz
Bragantia. Publicado em: 2020-09
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4. Selection to high productivity and stink bugs resistance by multivariate data analyses in soybean
ABSTRACT Stink bugs that affect soybeans are responsible for significant losses in seed production, quality and germination potential, in addition to hindering the mechanized harvest. To develop insect resistant materials, the breeder can compile a selection index by factor analysis. Therefore, the objective of this work was to validate the use of factor ana
Bragantia. Publicado em: 2020-06
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5. Selection of Canadian potato clones for agronomic and frying quality traits
RESUMO A demanda por cultivares adequadas ao processamento industrial, principalmente na forma de palitos pré-fritos congelados, é crescente no Brasil. Sabe-se que a expertise canadense em relação ao desenvolvimento de cultivares com características de processamento é alta. No entanto, as condições de cultivo no Canadá são bastante diferentes das o
Hortic. Bras.. Publicado em: 09/12/2019
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6. Yield, maturation cycle, and estimates of genetic parameters of Robusta coffee genotypes under irrigation in the Cerrado
Abstract Eighty-five Coffea canephora genotypes were evaluated for three crop seasons under irrigation in the Cerrado of the Distrito Federal, Brazil, to characterize the population regarding phenotype, yield and maturation cycle. The experiment was conducted through the Basic Model of Repeatability without Design methodology. Regarding the cycles, genotypes
Crop Breed. Appl. Biotechnol.. Publicado em: 05/12/2019
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7. Selection gains for bunch production in interspecific hybrids between “caiaué” and oil palm
Resumo: O objetivo deste trabalho foi estimar ganhos de seleção para produção de cachos em híbridos obtidos de genitores caiaué (Elaeis oleifera) da população Manicoré e dendê (Elaeis guineensis) da população La Mé, do terceiro ao oitavo ano após o plantio. Avaliaram-se 39 progênies de irmãos completos em experimentos conduzidos em delineamen
Pesq. agropec. bras.. Publicado em: 25/11/2019
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8. Genetic assessment of seed yield-related traits in superior hybrids of Paspalum plicatulum × Paspalum guenoarum
ABSTRACT This study aimed to estimate the genetic parameters, genetic correlations, genetic dissimilarity, and predicted gains with the selection of interspecific apomictic Paspalum plicatulum × Paspalum guenoarum hybrids in relation to seed yield traits. Nineteen genotypes that showed increased forage yield in previous studies were planted in a randomized
R. Bras. Zootec.. Publicado em: 25/11/2019
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9. Direct selection for phenotypic traits in carrot genotypes
RESUMO A seleção de genótipos de cenoura mais produtivos é fundamental para os programas de melhoramento dessa cultura visando aumento na produção com redução dos custos. Assim, objetivou-se com esse trabalho avaliar o ganho com a seleção direta e medir seus efeitos em outras características agronômicas de interesse em cenoura. Para isso, 36 gen�
Hortic. Bras.. Publicado em: 07/11/2019
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10. Heritability of morpho-agronomic traits in ornamental pepper
Abstract This study was conducted to identify the allelic interactions and genetic effects involved in genetic control of quantitative traits in Capsicum annuum. Six generations (P1, P2, F1, F2, BC1 and BC2) were used to study the variances, means and allelic interactions of 16 quantitative traits evaluated. The additive part of the phenotypic variance found
Crop Breed. Appl. Biotechnol.. Publicado em: 31/10/2019
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11. GENETIC GAINS IN THE POPCORN POPULATION UENF-14: DEVELOPING THE NINTH GENERATION OF INTRAPOPULATION RECURRENT SELECTION
RESUMO A ocorrência da correlação negativa entre produtividade de grãos (PG) e capacidade de expansão (CE) no milho-pipoca contribui para dificultar o processo seletivo. No intento de contornar esse inconveniente, foi proposto, o caráter de importância, volume por pipoca expandida por hectare (VP). O objetivo deste estudo foi desenvolver o nono ciclo
Rev. Caatinga. Publicado em: 21/10/2019
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12. Selection gain and interrelations between agronomic traits in wheat F5 genotypes
ABSTRACT This work aimed to estimate the variance components and genetic parameters, the selection gain, and the cause and effect relationships among traits in order to identify important traits for direct and indirect selection of wheat (Triticum aestivum L.) lines. Three strategies were used to obtain selection gains: direct and indirect selection, an inde
Rev. Ceres. Publicado em: 03/10/2019