Screening for Sugarcane Root Phenes Reveals That Reducing Tillering Does Not Lead to an Increased Root Mass Fraction

Frontiers in Plant Science
Johann S PierreAnne L Rae

Abstract

Sugarcane root systems are poorly studied and understood due to the perennial nature, tall stature, and the long cropping cycle. Whilst some field studies gave insights into sugarcane root traits, there is no detailed description of root and root system traits available. The objectives of our work were to establish a baseline of sugarcane root trait values that will serve for future studies, and to characterize the degree of root system resilience when restricting tiller number. We first conducted an initial screening for root trait diversity on a collection of twenty cultivars representative of sugarcane breeding from 1930 to now. Then we investigated the effect of reduced tillering, via manual de-tillering, on the plant root and root system traits of five varieties grown under optimal conditions in a glasshouse for 1700°Cd. In addition to establishing baseline means and variation for sugarcane root trait values that could serve as a reference for crop models, we demonstrated that the sugarcane root mass fraction was extremely resilient to drastic reduction in tiller number. Restricted plants were effectively maintaining their root system configuration (opening angle) by dramatically increasing the number of nodal roots produc...Continue Reading

References

Sep 8, 2007·Trends in Plant Science·Sophie de DorlodotXavier Draye
May 3, 2011·Current Opinion in Plant Biology·Jinming ZhuTedd Elich
Sep 23, 2014·Trends in Plant Science·Robert MeisterDaniel P Schachtman
Mar 6, 2015·Journal of Experimental Botany·Jonathan A AtkinsonDarren M Wells
Jun 14, 2015·Journal of Experimental Botany·René C P KuijkenHarro J Bouwmeester
Jun 17, 2015·Plant Physiology·Ai ZhanJonathan P Lynch
Nov 1, 2012·Functional Plant Biology : FPB·Hendrik PoorterJohannes A Postma

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