Plant Breeding and Biotechnological Advances

Borém, Aluízio; Diola, Valdir; Fritsche‐Neto, Roberto

doi:10.1016/b978-0-12-418672-9.00001-5

Cited by 24 publications

(35 citation statements)

References 16 publications

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“…(2007) evaluated FTA descriptor in P. peruviana and found similar results, with no signi cance regarding heterosis. When hybrids do not show high heterotic effect, the inheritance of the descriptor is probably only an additive effect (Borém et al 2017).…”

Section: Comparing the Mean Nfp Between Parents And Crosses (mentioning

confidence: 99%

Partial diallel in Physalis ixocarpa Brot. to improve fruit production

Orella

Silva

Passos

2023

Preprint

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Tomate de cáscara (Physalis ixocarpa Brot.) has great potential to generate hybrids and cultivars that present high yields. The objective of this work was to estimate genetic parameters using the REML/BLUP methodology and investigate selection strategies for F1 populations from a partial diallel, to increase fruit production. The crosses were carried out in 2020 and the evaluation of the parents and hybrids were carried out in 2021, using a randomized block design with three replications, and an experimental plot of 10 plants. Combining ability, heterosis, phenotypic correlations, correlation networks, path analysis, and selection indexes were estimated. Genetic variability was found for the descriptors fruit production, number of fruits per plant, fruit transverse axis, and soluble solids. Additive effects were predominant over non-additive ones. The 92V and 173V parents were recommended to increase fruit production and the number of fruits per plant, due to their general combining ability values. PI02 and PI05 were the hybrids with the highest heterosis estimates for fruit production and number of fruits per plant. The negative correlation between fruit production and soluble solids stood out in the correlation study and trail analysis, assisting in the strategy regarding the selection direction. The selection indexes selected the progenies: PI02, PI04, PI05, 92V and 173V.

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Section: Comparing the Mean Nfp Between Parents And Crosses (mentioning

confidence: 99%

Partial diallel in Physalis ixocarpa Brot. to improve fruit production

Orella

Silva

Passos

2023

Preprint

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“…Another factor to consider is that classic soybean breeding programs can take 8 to 12 years between crossing and the release of a new variety (Borém et al, 2017). However, several modern techniques, known as “speed breeding,” make it possible to reduce this time to 4 to 7 years, by reducing the breeding cycle, which is the time between the first crosses and the use of cultivars (Ceccarelli, 2015).…”

Section: Introductionmentioning

confidence: 99%

Efficiency of visual selection of agronomic traits for soybean production in a protected environment

Silva

Bezerra

et al. 2022

Legume Science

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The objectives of this work were to evaluate the efficiency of visual selection in soybean under a protected environment, to determine if the ability of an evaluator to select visually depends on their experience with the crop, and to study the efficiency of visual selection of traits associated with productivity to obtain income gains. For that, three soybean populations (F3, F4, and F5) were used, composed of 20 families each, conducted in a greenhouse in a randomized block design, with three replicates and experimental units, two plants per pot. In these, five evaluators with different levels of experience with the crop made the visual selection for each plant. Evaluators differ in their ability to identify more productive plants, but this ability is not associated with the evaluator's experience with the crop. In the search for more productive soybean plants, the number of pods per plant is the characteristic that most assists visual selection, provided there is uniformity of experimental conditions and genetic variability.

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“…Actualmente existen herramientas que permiten evaluar la diversidad genética, dentro de ellas están los marcadores moleculares que son un conjunto de técnicas que permiten visualizar o indicar la presencia de variantes alélicas, producto de algún tipo de mutación a través del tiempo evolutivo (7). La aplicación de éstos marcadores aporta información sobre la historia, la demografía, la ecología y el comportamiento de las especies que puede ayudar en la evaluación de riesgos, la asignación de prioridades, la delimitación de unidades y el diseño de estrategias de conservación eficaces (8).…”

Section: Introductionunclassified

“…Currently there are tools to evaluate genetic diversity, which include molecular markers that are a set of techniques that allow visualizing or indicating the presence of allelic variants, as a result of some type of mutation through evolutionary time (7). The application of these markers provides information on the history, demography, ecology and behavior of species that can assist in risk assessment, prioritization, delineation of units and design of effective conservation strategies (8).…”

Section: Introductionmentioning

confidence: 99%

Estimación de la diversidad genética de Anadara tuberculosa en cinco manglares de Tumaco, utilizando la enzima citocromo oxidasa I

2016

Rev MVZ Córdoba

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Objective. To estimate the genetic diversity of the Anadara tuberculosa en five mangrove swams of Tumaco, Nariño, Colombia using as a mitocondrial molecular marker the cytochromo oxidase sub-unit I (COI). Materials and methods. A total of 50 individuals were collected from the San Jorge, La Tiburonera, El Pajal, La Playa y Bajito Vaquería mangrove swamps, randomly selecting 10 specimens of each zone. The tissue sample was worked with absolute alcohol at ambient temperature in microtubes. DNA was extracted, and the mitocondrial DNA was amplified using the PCR technique (polymerase chain reaction). The amplified and quantified products of PCR were sequenced on both sides (Macrogen). Each one of the obtained sequences was edited and aligned. Later, the parameters of genetic diversity (haplotypical and nucleotidical) were measured, and the analysis of distribution between frequency pairs (Mistmach distribution) was elaborated. Finally, the analysis of nucleotidic variation and population structure (AMOVA) was completed. Results. The amplified product gene weighed 710 bp. The haplotypical diversity reported for all the populations was high (0.683±0.060) and the reported nucleotídical diversity was low for all the populations (0.040±0.020). The AMOVA results indicate that the variance amongst populations is low (4.20%) and that the variance within populations is high (95.80%). Conclusions. The studied populations are not structured and although there is a decrease of natural banks, the genetic diversity is high.

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Plant Breeding and Biotechnological Advances

Cited by 24 publications

References 16 publications

Partial diallel in Physalis ixocarpa Brot. to improve fruit production

Partial diallel in Physalis ixocarpa Brot. to improve fruit production

Efficiency of visual selection of agronomic traits for soybean production in a protected environment

Estimación de la diversidad genética de Anadara tuberculosa en cinco manglares de Tumaco, utilizando la enzima citocromo oxidasa I

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