Association of water spectral indices with plant and soil water relations in contrasting wheat genotypes.

Journal of Experimental Botany
Mario GutierrezArthur R Klatt

Abstract

Spectral reflectance indices can be used to estimate the water status of plants in a rapid, non-destructive manner. Water spectral indices were measured on wheat under a range of water-deficit conditions in field-based yield trials to establish their relationship with water relations parameters as well as available volumetric soil water (AVSW) to indicate soil water extraction patterns. Three types of wheat germplasm were studied which showed a range of drought adaptation; near-isomorphic sister lines from an elite/elite cross, advanced breeding lines, and lines derived from interspecific hybridization with wild relatives (synthetic derivative lines). Five water spectral indices (one water index and four normalized water indices) based on near infrared wavelengths were determined under field conditions between the booting and grain-filling stages of crop development. Among all water spectral indices, one in particular, which was denominated as NWI-3, showed the most consistent associations with water relations parameters and demonstrated the strongest associations in all three germplasm sets. NWI-3 showed a strong linear relationship (r(2) >0.6-0.8) with leaf water potential (psi(leaf)) across a broad range of values (-2.0 to -...Continue Reading

References

Jul 10, 2002·Annals of Botany·M M ChavesC Pinheiro
Dec 23, 2006·Journal of Experimental Botany·Matthew ReynoldsRichard Trethowan
Aug 28, 2007·Trends in Plant Science·Juan M MontesJochen C Reif
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Apr 1, 2007·Functional Plant Biology : FPB·Juan Jose Olivares-VillegasGlenn K McDonald

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Citations

Jun 15, 2012·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Reyazul Rouf MirRajeev K Varshney
Sep 6, 2011·Journal of Experimental Botany·Ian C DoddM A J Parry
Oct 22, 2013·Trends in Plant Science·José Luis Araus, Jill E Cairns
May 17, 2018·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Junli ZhangJorge Dubcovsky
Mar 6, 2019·Plant, Cell & Environment·Onoriode CoastOwen K Atkin
May 1, 2013·Functional Plant Biology : FPB·Harald HacklUrs Schmidhalter
Dec 1, 2014·Functional Plant Biology : FPB·Pablo RischbeckUrs Schmidhalter
Apr 27, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Eric S OberMichelle Watt
Mar 14, 2021·Journal of Experimental Botany·Carlos A Robles-ZazuetaErik H Murchie
Jun 18, 2021·Journal of Experimental Botany·Matthew P ReynoldsHans J Braun

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