Phenotypic variability and modelling of root structure of wild Lupinus angustifolius genotypes

Ying Long Chen, Vanessa M. Dunbabin, Johannes A. Postma, Art J. Diggle, Jairo A. Palta, Jonathan Paul Lynch, Kadambot H.M. Siddique, Zed Rengel

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Background and aims: Root plasticity in response to the edaphic environment represents a challenge in the quantification of phenotypic variation in crop germplasm. The aim of this study was to use various growth systems to assess phenotypic variation among wild genotypes of Lupinus angustifolius. Methods: Ten wild genotypes of L. angustifolius selected from an earlier phenotyping study were grown in three different growth systems: semi-hydroponics, potting-mix filled pots, and river-sand filled pots. Results: Major root-trait data collected in the present study in the semi-hydroponic growth system were strongly correlated with those from the earlier large phenotyping trial. Plants grown in the two solid media had some of the measured parameters significantly correlated. Principal component analysis captured the major variability in three (semi-hydroponics) or four (solid media) principal components. The genotypes were grouped into five clusters for each growth media, but cluster composition varied among the media. We found genetic variation and phenotypic plasticity in some root traits among tested genotypes. Using input parameters derived from the semihydroponic phenotyping system, simulation models (ROOTMAP and SimRoot) closely reproduced the root systems of a diverse range of lupin genotypes. Conclusions: Wild L. angustifolius genotypes displayed genetic variation and phenotypic plasticity when exposed to various growth conditions. The consistent ranking of genotypes in the semihydroponic phenotyping system and the two solid media confirmed the capacity of the semihydroponic phenotyping system of providing simple and relevant growing conditions. The results demonstrated the utility of this system in gathering the data for parameterising the simulation models of root architecture.

Original languageEnglish (US)
Pages (from-to)345-364
Number of pages20
JournalPlant and Soil
Volume348
Issue number1-2
DOIs
StatePublished - Nov 1 2011

Fingerprint

Lupinus angustifolius
genotype
hydroponics
phenotype
modeling
phenotypic plasticity
phenotypic variation
genetic variation
simulation models
root architecture
Lupinus
germplasm
root system
ranking
simulation
plasticity
root systems
principal component analysis
culture media
sand

All Science Journal Classification (ASJC) codes

  • Soil Science
  • Plant Science

Cite this

Chen, Y. L., Dunbabin, V. M., Postma, J. A., Diggle, A. J., Palta, J. A., Lynch, J. P., ... Rengel, Z. (2011). Phenotypic variability and modelling of root structure of wild Lupinus angustifolius genotypes. Plant and Soil, 348(1-2), 345-364. https://doi.org/10.1007/s11104-011-0939-z
Chen, Ying Long ; Dunbabin, Vanessa M. ; Postma, Johannes A. ; Diggle, Art J. ; Palta, Jairo A. ; Lynch, Jonathan Paul ; Siddique, Kadambot H.M. ; Rengel, Zed. / Phenotypic variability and modelling of root structure of wild Lupinus angustifolius genotypes. In: Plant and Soil. 2011 ; Vol. 348, No. 1-2. pp. 345-364.
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Chen, YL, Dunbabin, VM, Postma, JA, Diggle, AJ, Palta, JA, Lynch, JP, Siddique, KHM & Rengel, Z 2011, 'Phenotypic variability and modelling of root structure of wild Lupinus angustifolius genotypes', Plant and Soil, vol. 348, no. 1-2, pp. 345-364. https://doi.org/10.1007/s11104-011-0939-z

Phenotypic variability and modelling of root structure of wild Lupinus angustifolius genotypes. / Chen, Ying Long; Dunbabin, Vanessa M.; Postma, Johannes A.; Diggle, Art J.; Palta, Jairo A.; Lynch, Jonathan Paul; Siddique, Kadambot H.M.; Rengel, Zed.

In: Plant and Soil, Vol. 348, No. 1-2, 01.11.2011, p. 345-364.

Research output: Contribution to journalArticle

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T1 - Phenotypic variability and modelling of root structure of wild Lupinus angustifolius genotypes

AU - Chen, Ying Long

AU - Dunbabin, Vanessa M.

AU - Postma, Johannes A.

AU - Diggle, Art J.

AU - Palta, Jairo A.

AU - Lynch, Jonathan Paul

AU - Siddique, Kadambot H.M.

AU - Rengel, Zed

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Y1 - 2011/11/1

N2 - Background and aims: Root plasticity in response to the edaphic environment represents a challenge in the quantification of phenotypic variation in crop germplasm. The aim of this study was to use various growth systems to assess phenotypic variation among wild genotypes of Lupinus angustifolius. Methods: Ten wild genotypes of L. angustifolius selected from an earlier phenotyping study were grown in three different growth systems: semi-hydroponics, potting-mix filled pots, and river-sand filled pots. Results: Major root-trait data collected in the present study in the semi-hydroponic growth system were strongly correlated with those from the earlier large phenotyping trial. Plants grown in the two solid media had some of the measured parameters significantly correlated. Principal component analysis captured the major variability in three (semi-hydroponics) or four (solid media) principal components. The genotypes were grouped into five clusters for each growth media, but cluster composition varied among the media. We found genetic variation and phenotypic plasticity in some root traits among tested genotypes. Using input parameters derived from the semihydroponic phenotyping system, simulation models (ROOTMAP and SimRoot) closely reproduced the root systems of a diverse range of lupin genotypes. Conclusions: Wild L. angustifolius genotypes displayed genetic variation and phenotypic plasticity when exposed to various growth conditions. The consistent ranking of genotypes in the semihydroponic phenotyping system and the two solid media confirmed the capacity of the semihydroponic phenotyping system of providing simple and relevant growing conditions. The results demonstrated the utility of this system in gathering the data for parameterising the simulation models of root architecture.

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