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Dominance and Epistasis Interactions Revealed as Important Variants for Leaf Traits of Maize NAM Population

Leaf orientation traits of maize (Zea mays) are complex traits controlling by multiple loci with additive, dominance, epistasis, and environmental interaction effects. In this study, an attempt was made for identifying the causal loci, and estimating the additive, non-additive, environmental specifi...

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Autores principales: Monir, Md. M., Zhu, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6015889/
https://www.ncbi.nlm.nih.gov/pubmed/29967625
http://dx.doi.org/10.3389/fpls.2018.00627
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author Monir, Md. M.
Zhu, Jun
author_facet Monir, Md. M.
Zhu, Jun
author_sort Monir, Md. M.
collection PubMed
description Leaf orientation traits of maize (Zea mays) are complex traits controlling by multiple loci with additive, dominance, epistasis, and environmental interaction effects. In this study, an attempt was made for identifying the causal loci, and estimating the additive, non-additive, environmental specific genetic effects underpinning leaf traits (leaf length, leaf width, and upper leaf angle) of maize NAM population. Leaf traits were analyzed by using full genetic model and additive model of multiple loci. Analysis with full genetic model identified 38∼47 highly significant loci (-log(10)P(EW) > 5), while estimated total heritability were 64.32∼79.06% with large contributions due to dominance and dominance related epistasis effects (16.00∼56.91%). Analysis with additive model obtained smaller total heritability ([Formula: see text] ≙ 18.68∼29.56%) and detected fewer loci (30∼36) as compared to the full genetic model. There were 12 pleiotropic loci identified for the three leaf traits: eight loci for leaf length and leaf width, and four loci for leaf length and leaf angle. Optimal genotype combinations of superior line (SL) and superior hybrid (SH) were predicted for each of the traits under four different environments based on estimated genotypic effects to facilitate maker-assisted selection for the leaf traits.
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spelling pubmed-60158892018-07-02 Dominance and Epistasis Interactions Revealed as Important Variants for Leaf Traits of Maize NAM Population Monir, Md. M. Zhu, Jun Front Plant Sci Plant Science Leaf orientation traits of maize (Zea mays) are complex traits controlling by multiple loci with additive, dominance, epistasis, and environmental interaction effects. In this study, an attempt was made for identifying the causal loci, and estimating the additive, non-additive, environmental specific genetic effects underpinning leaf traits (leaf length, leaf width, and upper leaf angle) of maize NAM population. Leaf traits were analyzed by using full genetic model and additive model of multiple loci. Analysis with full genetic model identified 38∼47 highly significant loci (-log(10)P(EW) > 5), while estimated total heritability were 64.32∼79.06% with large contributions due to dominance and dominance related epistasis effects (16.00∼56.91%). Analysis with additive model obtained smaller total heritability ([Formula: see text] ≙ 18.68∼29.56%) and detected fewer loci (30∼36) as compared to the full genetic model. There were 12 pleiotropic loci identified for the three leaf traits: eight loci for leaf length and leaf width, and four loci for leaf length and leaf angle. Optimal genotype combinations of superior line (SL) and superior hybrid (SH) were predicted for each of the traits under four different environments based on estimated genotypic effects to facilitate maker-assisted selection for the leaf traits. Frontiers Media S.A. 2018-06-18 /pmc/articles/PMC6015889/ /pubmed/29967625 http://dx.doi.org/10.3389/fpls.2018.00627 Text en Copyright © 2018 Monir and Zhu. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Monir, Md. M.
Zhu, Jun
Dominance and Epistasis Interactions Revealed as Important Variants for Leaf Traits of Maize NAM Population
title Dominance and Epistasis Interactions Revealed as Important Variants for Leaf Traits of Maize NAM Population
title_full Dominance and Epistasis Interactions Revealed as Important Variants for Leaf Traits of Maize NAM Population
title_fullStr Dominance and Epistasis Interactions Revealed as Important Variants for Leaf Traits of Maize NAM Population
title_full_unstemmed Dominance and Epistasis Interactions Revealed as Important Variants for Leaf Traits of Maize NAM Population
title_short Dominance and Epistasis Interactions Revealed as Important Variants for Leaf Traits of Maize NAM Population
title_sort dominance and epistasis interactions revealed as important variants for leaf traits of maize nam population
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6015889/
https://www.ncbi.nlm.nih.gov/pubmed/29967625
http://dx.doi.org/10.3389/fpls.2018.00627
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