Diversity in root growth responses to moisture deficit in young faba bean (Vicia faba L.) plants

PeerJ
Kiflemariam Yehuala BelachewFrederick L Stoddard

Abstract

Soil moisture deficiency causes yield reduction and instability in faba bean (Vicia faba L.) production. The extent of sensitivity to drought stress varies across accessions originating from diverse moisture regimes of the world. Hence, we conducted successive greenhouse experiments in pots and rhizotrons to explore diversity in root responses to soil water deficit. A set of 89 accessions from wet and dry growing regions of the world was defined according to the Focused Identification of Germplasm Strategy and screened in a perlite-sand medium under well watered conditions in a greenhouse experiment. Stomatal conductance, canopy temperature, chlorophyll concentration, and root and shoot dry weights were recorded during the fifth week of growth. Eight accessions representing the range of responses were selected for further investigation. Starting five days after germination, they were subjected to a root phenotyping experiment using the automated phenotyping platform GROWSCREEN-Rhizo. The rhizotrons were filled with peat-soil under well watered and water limited conditions. Root architectural traits were recorded five, 12, and 19 days after the treatment (DAT) began. In the germplasm survey, accessions from dry regions showed si...Continue Reading

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Citations

Jan 21, 2020·Journal of Experimental Botany·Sascha WaidmannJürgen Kleine-Vehn
Jun 13, 2020·The Plant Journal : for Cell and Molecular Biology·Thibaut BontpartPeter Doerner
May 28, 2019·International Journal of Molecular Sciences·Muhammad NadeemLijuan Qiu
Sep 26, 2019·Frontiers in Plant Science·Kiflemariam Y BelachewFrederick L Stoddard
May 1, 2021·Plants·Shiwangni RaoGarry M Rosewarne

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Datasets Mentioned

BETA
DS70622
DS74573
DS11320
WS114476

Software Mentioned

SPSS
Electronic Moisture Analyzer
WinRHIZO
FIGS
PaintRHIZO
Rhizo
GROWSCREEN

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