Divergent selection for grain protein affects nitrogen use in maize hybrids

Martín Uribelarrea, Stephen P. Moose, Frederick E. Below

Research output: Contribution to journalArticle

Abstract

The Illinois high (IHP), low (ILP), and corresponding reverse (IRHP, and IRLP) protein-strains of maize represent genetic extremes for differences in grain protein concentration. The objective of this study was to determine how divergent selection for grain protein affects N use in hybrid plants. Inbreds derived from the protein-strains were crossed as males to a common tester and the resultant hybrids evaluated at eight N rates in the field over 3 years. A more than two-fold difference in grain protein concentration was observed among the strain-hybrids with ILP averaging 65 g kg-1, IRHP 89 g kg-1, IRLP 111 g kg-1, and IHP 148 g kg-1 of grain protein. Except for IHP at the lowest N levels, the strain-hybrids were similar in their whole shoot biomass production both pre- and post-flowering. Conversely, the strain-hybrids differed markedly in their uptake and accumulation of plant N, and these differences were already evident at flowering before a grain sink was present. Although all hybrids had the same overall N use efficiency at maturity (approximately 24 kg kg-1 N), they differed in their N use components with IHP and IRLP exhibiting a higher uptake efficiency, and ILP and IRHP exhibiting high utilization efficiency. The remobilization of leaf N was also more extensive for IHP and IRLP. Changes in grain protein concentration from divergent selection were directly related to changes in uptake and use of N by the plant.

Original languageEnglish (US)
Pages (from-to)82-90
Number of pages9
JournalField Crops Research
Volume100
Issue number1
DOIs
StatePublished - Jan 4 2007

Fingerprint

grain protein
maize
protein
corn
nitrogen
flowering
uptake mechanisms
remobilization
biomass production
proteins
shoot
shoots
fold
biomass
leaves

Keywords

  • Biomass accumulation
  • Illinois protein strains
  • Maize
  • N use efficiency
  • Zea mays

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science

Cite this

Divergent selection for grain protein affects nitrogen use in maize hybrids. / Uribelarrea, Martín; Moose, Stephen P.; Below, Frederick E.

In: Field Crops Research, Vol. 100, No. 1, 04.01.2007, p. 82-90.

Research output: Contribution to journalArticle

@article{8c78719a0bbc41a4beaf655ff49634b6,
title = "Divergent selection for grain protein affects nitrogen use in maize hybrids",
abstract = "The Illinois high (IHP), low (ILP), and corresponding reverse (IRHP, and IRLP) protein-strains of maize represent genetic extremes for differences in grain protein concentration. The objective of this study was to determine how divergent selection for grain protein affects N use in hybrid plants. Inbreds derived from the protein-strains were crossed as males to a common tester and the resultant hybrids evaluated at eight N rates in the field over 3 years. A more than two-fold difference in grain protein concentration was observed among the strain-hybrids with ILP averaging 65 g kg-1, IRHP 89 g kg-1, IRLP 111 g kg-1, and IHP 148 g kg-1 of grain protein. Except for IHP at the lowest N levels, the strain-hybrids were similar in their whole shoot biomass production both pre- and post-flowering. Conversely, the strain-hybrids differed markedly in their uptake and accumulation of plant N, and these differences were already evident at flowering before a grain sink was present. Although all hybrids had the same overall N use efficiency at maturity (approximately 24 kg kg-1 N), they differed in their N use components with IHP and IRLP exhibiting a higher uptake efficiency, and ILP and IRHP exhibiting high utilization efficiency. The remobilization of leaf N was also more extensive for IHP and IRLP. Changes in grain protein concentration from divergent selection were directly related to changes in uptake and use of N by the plant.",
keywords = "Biomass accumulation, Illinois protein strains, Maize, N use efficiency, Zea mays",
author = "Mart{\'i}n Uribelarrea and Moose, {Stephen P.} and Below, {Frederick E.}",
year = "2007",
month = "1",
day = "4",
doi = "10.1016/j.fcr.2006.05.008",
language = "English (US)",
volume = "100",
pages = "82--90",
journal = "Field Crops Research",
issn = "0378-4290",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - Divergent selection for grain protein affects nitrogen use in maize hybrids

AU - Uribelarrea, Martín

AU - Moose, Stephen P.

AU - Below, Frederick E.

PY - 2007/1/4

Y1 - 2007/1/4

N2 - The Illinois high (IHP), low (ILP), and corresponding reverse (IRHP, and IRLP) protein-strains of maize represent genetic extremes for differences in grain protein concentration. The objective of this study was to determine how divergent selection for grain protein affects N use in hybrid plants. Inbreds derived from the protein-strains were crossed as males to a common tester and the resultant hybrids evaluated at eight N rates in the field over 3 years. A more than two-fold difference in grain protein concentration was observed among the strain-hybrids with ILP averaging 65 g kg-1, IRHP 89 g kg-1, IRLP 111 g kg-1, and IHP 148 g kg-1 of grain protein. Except for IHP at the lowest N levels, the strain-hybrids were similar in their whole shoot biomass production both pre- and post-flowering. Conversely, the strain-hybrids differed markedly in their uptake and accumulation of plant N, and these differences were already evident at flowering before a grain sink was present. Although all hybrids had the same overall N use efficiency at maturity (approximately 24 kg kg-1 N), they differed in their N use components with IHP and IRLP exhibiting a higher uptake efficiency, and ILP and IRHP exhibiting high utilization efficiency. The remobilization of leaf N was also more extensive for IHP and IRLP. Changes in grain protein concentration from divergent selection were directly related to changes in uptake and use of N by the plant.

AB - The Illinois high (IHP), low (ILP), and corresponding reverse (IRHP, and IRLP) protein-strains of maize represent genetic extremes for differences in grain protein concentration. The objective of this study was to determine how divergent selection for grain protein affects N use in hybrid plants. Inbreds derived from the protein-strains were crossed as males to a common tester and the resultant hybrids evaluated at eight N rates in the field over 3 years. A more than two-fold difference in grain protein concentration was observed among the strain-hybrids with ILP averaging 65 g kg-1, IRHP 89 g kg-1, IRLP 111 g kg-1, and IHP 148 g kg-1 of grain protein. Except for IHP at the lowest N levels, the strain-hybrids were similar in their whole shoot biomass production both pre- and post-flowering. Conversely, the strain-hybrids differed markedly in their uptake and accumulation of plant N, and these differences were already evident at flowering before a grain sink was present. Although all hybrids had the same overall N use efficiency at maturity (approximately 24 kg kg-1 N), they differed in their N use components with IHP and IRLP exhibiting a higher uptake efficiency, and ILP and IRHP exhibiting high utilization efficiency. The remobilization of leaf N was also more extensive for IHP and IRLP. Changes in grain protein concentration from divergent selection were directly related to changes in uptake and use of N by the plant.

KW - Biomass accumulation

KW - Illinois protein strains

KW - Maize

KW - N use efficiency

KW - Zea mays

UR - http://www.scopus.com/inward/record.url?scp=33750011131&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33750011131&partnerID=8YFLogxK

U2 - 10.1016/j.fcr.2006.05.008

DO - 10.1016/j.fcr.2006.05.008

M3 - Article

AN - SCOPUS:33750011131

VL - 100

SP - 82

EP - 90

JO - Field Crops Research

JF - Field Crops Research

SN - 0378-4290

IS - 1

ER -