Recurrent phenotypic selection

Author: ebpp

August undefined, 2024

On the island of Bermuda, the shell size of the land snail Poecilozonites has increased during glacial periods and shrunk again during warmer periods. It has been proposed that this is due to the increased size of the island during glacial periods (as a consequence of lower sea levels), which results in more large vertebrate predators and creates a selection pressure for larger shell size in the snails. WebMarker-assisted recurrent selection (MARS) is an important strategy for the traits controlled by a moderately large number of QTLs (Xu et al., 2013 ). MARS refers to the improvement of an F2 population by one cycle of phenotypic and marker data followed by two or three cycles of only marker data.

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WebNov 30, 2024 · The MAS has an edge over the visual phenotypic selection because the trait of interest is linked with a molecular marker which increases the selection efficiency of the targeted trait . ... Recurrent selection is an efficient technique used in plant breeding for the improvement of quantitative traits by continuous crossing and selection process ... WebApr 11, 2024 · However, modeling the complex relationships between the observed phenotypic traits and biomass remains a challenging task, as the ground reference data are very limited for each genotype in the breeding experiment. In this study, a Long Short-Term Memory (LSTM) based Recurrent Neural Network (RNN) model is proposed for sorghum … university of east of england

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WebPreetmoninder Lidder, Andrea Sonnino, in Advances in Genetics, 2012. H Molecular marker-assisted selection. Most tree breeding programs rely on recurrent selection, that is, … WebOur objectives were to compare, by simulation, the response to phenotypic selection, marker-assisted recurrent selection (MARS), and genomewide selection with small population sizes in oil palm, and assess the efficiency of each method in terms of years and cost per unit gain. WebIn the recurrent genomic selection program, we focused on the female pool and selected 20 out of the 120 female lines. The selection was based on the first-year estimates of … university of east london staff directory

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WebAt the phenotype level, recurrent evolution can be observed across a continuum of levels, which for simplicity can be broken down into molecular phenotype, cellular phenotype, and organismal phenotype. At the genotype level, recurrent evolution can only be detected using DNA sequencing data. WebCancer evolution is driven by natural selection acting upon phenotypic trait variation. However, the extent to which phenotypic variation within a tumour is a consequence of intra-tumour genetic heterogeneity remains undetermined. Here we show that colorectal cancer cells frequently have highly plastic phenotypic traitsin vivoin patient tumours. university of edinburgh applied linguisticsWebRecurrent selection is an important breeding method for population improvement and ... Our major objective in this study was to use the QuMARS tool to compare phenotypic recurrent, marker-assisted ... university of east anglia to london

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Recurrent phenotypic selection

Recurrent Selection - Definition and Types - Biotech Articles

WebJun 1, 2024 · Recurrent phenotypic selection for resistance to diseases caused by Bipolaris oryzae in switchgrass (Panicum virgatum L.) 1. Introduction. Switchgrass ( Panicum … Web... phenotypic selection ( Figure 3) tends to be more effective than mass selection. A population is created by cross-pollination between two (or more) populations to create …

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WebFeb 22, 2012 · Currently, alfalfa breeding relies on recurrent phenotypic selection, but alternatives incorporating molecular marker assisted breeding could enhance genetic gain per unit time and per unit cost, and accelerate alfalfa improvement. WebSep 13, 2024 · Recurrent selection is a population improvement breeding method that involves the repeated selection cycles (phenotypic selection) with aim of improving the …

WebFeb 18, 2024 · Simulations of phenotypic selection found that including Random Forest rather than LASSO genetic models, and multi-trait rather than single-trait models as the … WebFeb 2, 2024 · We screened the nondormant cultivar CUF 101 and populations developed by three cycles of recurrent phenotypic selection for taller and shorter plants in autumn with markers derived from genotyping-by-sequencing (GBS). We validated the robustness of our GBS-derived allele frequency estimates using an empirical approach.

WebRecurrence of the primary disease has become a major focus for transplant hepatologists both when investigating graft dysfunction and when tailoring immunosuppression to maximize graft survival. However, disease recurrence varies in penetrance, can be predictable or random, and does not always conform to the expected pattern of disease. …

Webtive was the use of recurrent phenotypic selection (RPS), as Burton (1974) did in the sexual diploid germplasm of the species.Afterfourselectioncycles,anincreaseinforageyield of …

WebNov 5, 2024 · Recurrent selection based on combining ability has been successfully used in tetraploid bahiagrass (Paspalum notatum Flüggé) to accumulate heterotic effects and exploit hybrid vigor. However, its efficiency depends on an accurate selection of the best genotypes to form a new recombinant population. The objective of this work was to … university of edinburgh aceWebOct 11, 2024 · Although the clinical use of targeted gene sequencing-based diagnostics is valuable, whole-exome sequencing has also emerged as a successful diagnostic tool in molecular genetics laboratories worldwide. Molecular genetic tests for episodic ataxia type 2 (EA2) usually target only the specific calcium channel gene (CACNA1A) that is known to … university of edinburgh charity numberWebThe nutritional quality of lucerne (alfalfa, Medicago sativa L.) plants correlates positively with the presence of multifoliolate (MF) leaves. Using phenotypic recurrent selection, we developed populations with an increased percentage of MF expression from 6.7% in the original population (C0) to 77.7% in the fourth cycle (C4). The effect of selection on … university of east london press officeWebThe results of the present paper indicate that phenotypic recurrent selection was efficient in increasing the production of male and female 2n gametes in diploid alfalfa. Two distinct selections were carried out, one for 2n pollen and the other for 2n egg production and two cycles of phenotypic recurrent selection were performed. ... university of edinburgh astrophysicsWebUsing phenotypic recurrent selection, we developed populations with an increased percentage of MF expression from 6.7% in the original population (C0) to 77.7% in the … university of edinburgh contact numberWebIn order to make a selection on a phenotypic basis, 14 agro-morphological traits were measured and recorded. The result obtained from the study showed that 16 lines received the seven resistance genes in sufficiently varied numbers and were selected. university of edinburgh graphpadWebFeb 2, 2024 · Historical recurrent selection experiments have been able to manipulate the dormancy response. We hypothesized that artificial selection for dormancy phenotypes in … university of edinburgh environmental science