Genotype-by-environment interactions affecting heterosis in maize

Zhi Li, Lisa Coffey, Jacob Garfin, Nathan D. Miller, Michael R. White, Edgar P. Spalding, Natalia De Leon, Shawn M. Kaeppler, Patrick S. Schnable, Nathan M. Springer, Candice N. Hirsch

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The environment can influence heterosis, the phenomena in which the offspring of two inbred parents exhibits phenotypic performance beyond the inbred parents for specific traits. In this study we measured 25 traits in a set of 47 maize hybrids and their inbred parents grown in 16 different environments with varying levels of average productivity. By quantifying 25 vegetative and reproductive traits across the life cycle we were able to analyze interactions between the environment and multiple distinct instances of heterosis. The magnitude and rank among hybrids for better-parent heterosis (BPH) varied for the different traits and environments. Across the traits, a higher within plot variance was observed for inbred lines compared to hybrids. However, for most traits, variance across environments was not significantly different for inbred lines compared to hybrids. Further, for many traits the correlations of BPH to hybrid performance and BPH to better parent performance were of comparable magnitude. These results indicate that inbred lines and hybrids show similar trends in environmental response and both are contributing to observed genotype-by-environment interactions for heterosis. This study highlights the degree of heterosis is not an inherent trait of a specific hybrid, but varies depending on the trait measured and the environment where that trait is measured. Studies that attempt to correlate molecular processes with heterosis are hindered by the fact that heterosis is not a consistent attribute of a specific hybrid.

Original languageEnglish (US)
Article numbere0191321
JournalPloS one
Volume13
Issue number1
DOIs
StatePublished - Jan 2018

Fingerprint

Hybrid Vigor
heterosis
Zea mays
Life cycle
Productivity
Genotype
corn
genotype
inbred lines
reproductive traits
Life Cycle Stages
life cycle (organisms)

Cite this

Li, Z., Coffey, L., Garfin, J., Miller, N. D., White, M. R., Spalding, E. P., ... Hirsch, C. N. (2018). Genotype-by-environment interactions affecting heterosis in maize. PloS one, 13(1), [e0191321]. https://doi.org/10.1371/journal.pone.0191321

Genotype-by-environment interactions affecting heterosis in maize. / Li, Zhi; Coffey, Lisa; Garfin, Jacob; Miller, Nathan D.; White, Michael R.; Spalding, Edgar P.; De Leon, Natalia; Kaeppler, Shawn M.; Schnable, Patrick S.; Springer, Nathan M.; Hirsch, Candice N.

In: PloS one, Vol. 13, No. 1, e0191321, 01.2018.

Research output: Contribution to journalArticle

Li, Z, Coffey, L, Garfin, J, Miller, ND, White, MR, Spalding, EP, De Leon, N, Kaeppler, SM, Schnable, PS, Springer, NM & Hirsch, CN 2018, 'Genotype-by-environment interactions affecting heterosis in maize', PloS one, vol. 13, no. 1, e0191321. https://doi.org/10.1371/journal.pone.0191321
Li Z, Coffey L, Garfin J, Miller ND, White MR, Spalding EP et al. Genotype-by-environment interactions affecting heterosis in maize. PloS one. 2018 Jan;13(1). e0191321. https://doi.org/10.1371/journal.pone.0191321
Li, Zhi ; Coffey, Lisa ; Garfin, Jacob ; Miller, Nathan D. ; White, Michael R. ; Spalding, Edgar P. ; De Leon, Natalia ; Kaeppler, Shawn M. ; Schnable, Patrick S. ; Springer, Nathan M. ; Hirsch, Candice N. / Genotype-by-environment interactions affecting heterosis in maize. In: PloS one. 2018 ; Vol. 13, No. 1.
@article{c0fb1fdb4e714e559d37b74e0a2debc6,
title = "Genotype-by-environment interactions affecting heterosis in maize",
abstract = "The environment can influence heterosis, the phenomena in which the offspring of two inbred parents exhibits phenotypic performance beyond the inbred parents for specific traits. In this study we measured 25 traits in a set of 47 maize hybrids and their inbred parents grown in 16 different environments with varying levels of average productivity. By quantifying 25 vegetative and reproductive traits across the life cycle we were able to analyze interactions between the environment and multiple distinct instances of heterosis. The magnitude and rank among hybrids for better-parent heterosis (BPH) varied for the different traits and environments. Across the traits, a higher within plot variance was observed for inbred lines compared to hybrids. However, for most traits, variance across environments was not significantly different for inbred lines compared to hybrids. Further, for many traits the correlations of BPH to hybrid performance and BPH to better parent performance were of comparable magnitude. These results indicate that inbred lines and hybrids show similar trends in environmental response and both are contributing to observed genotype-by-environment interactions for heterosis. This study highlights the degree of heterosis is not an inherent trait of a specific hybrid, but varies depending on the trait measured and the environment where that trait is measured. Studies that attempt to correlate molecular processes with heterosis are hindered by the fact that heterosis is not a consistent attribute of a specific hybrid.",
author = "Zhi Li and Lisa Coffey and Jacob Garfin and Miller, {Nathan D.} and White, {Michael R.} and Spalding, {Edgar P.} and {De Leon}, Natalia and Kaeppler, {Shawn M.} and Schnable, {Patrick S.} and Springer, {Nathan M.} and Hirsch, {Candice N.}",
year = "2018",
month = "1",
doi = "10.1371/journal.pone.0191321",
language = "English (US)",
volume = "13",
journal = "PLoS One",
issn = "1932-6203",
publisher = "Public Library of Science",
number = "1",

}

TY - JOUR

T1 - Genotype-by-environment interactions affecting heterosis in maize

AU - Li, Zhi

AU - Coffey, Lisa

AU - Garfin, Jacob

AU - Miller, Nathan D.

AU - White, Michael R.

AU - Spalding, Edgar P.

AU - De Leon, Natalia

AU - Kaeppler, Shawn M.

AU - Schnable, Patrick S.

AU - Springer, Nathan M.

AU - Hirsch, Candice N.

PY - 2018/1

Y1 - 2018/1

N2 - The environment can influence heterosis, the phenomena in which the offspring of two inbred parents exhibits phenotypic performance beyond the inbred parents for specific traits. In this study we measured 25 traits in a set of 47 maize hybrids and their inbred parents grown in 16 different environments with varying levels of average productivity. By quantifying 25 vegetative and reproductive traits across the life cycle we were able to analyze interactions between the environment and multiple distinct instances of heterosis. The magnitude and rank among hybrids for better-parent heterosis (BPH) varied for the different traits and environments. Across the traits, a higher within plot variance was observed for inbred lines compared to hybrids. However, for most traits, variance across environments was not significantly different for inbred lines compared to hybrids. Further, for many traits the correlations of BPH to hybrid performance and BPH to better parent performance were of comparable magnitude. These results indicate that inbred lines and hybrids show similar trends in environmental response and both are contributing to observed genotype-by-environment interactions for heterosis. This study highlights the degree of heterosis is not an inherent trait of a specific hybrid, but varies depending on the trait measured and the environment where that trait is measured. Studies that attempt to correlate molecular processes with heterosis are hindered by the fact that heterosis is not a consistent attribute of a specific hybrid.

AB - The environment can influence heterosis, the phenomena in which the offspring of two inbred parents exhibits phenotypic performance beyond the inbred parents for specific traits. In this study we measured 25 traits in a set of 47 maize hybrids and their inbred parents grown in 16 different environments with varying levels of average productivity. By quantifying 25 vegetative and reproductive traits across the life cycle we were able to analyze interactions between the environment and multiple distinct instances of heterosis. The magnitude and rank among hybrids for better-parent heterosis (BPH) varied for the different traits and environments. Across the traits, a higher within plot variance was observed for inbred lines compared to hybrids. However, for most traits, variance across environments was not significantly different for inbred lines compared to hybrids. Further, for many traits the correlations of BPH to hybrid performance and BPH to better parent performance were of comparable magnitude. These results indicate that inbred lines and hybrids show similar trends in environmental response and both are contributing to observed genotype-by-environment interactions for heterosis. This study highlights the degree of heterosis is not an inherent trait of a specific hybrid, but varies depending on the trait measured and the environment where that trait is measured. Studies that attempt to correlate molecular processes with heterosis are hindered by the fact that heterosis is not a consistent attribute of a specific hybrid.

UR - http://www.scopus.com/inward/record.url?scp=85040739617&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85040739617&partnerID=8YFLogxK

U2 - 10.1371/journal.pone.0191321

DO - 10.1371/journal.pone.0191321

M3 - Article

C2 - 29342221

AN - SCOPUS:85040739617

VL - 13

JO - PLoS One

JF - PLoS One

SN - 1932-6203

IS - 1

M1 - e0191321

ER -