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Paddyomics--drought tolerance research for rainfed lowland rice at IRRI

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Published on Jul 20, 2010

IRRI scientists have been developing a new system for precise and high throughput phenotyping of drought tolerance of rainfed lowland rice (paddyomics). Rice plants are transplanted in rainout shelters under field conditions, soil is mapped to characterize field spatial variability, drought stress is applied following a standardized protocol targeting reproductive-stage, as the most sensitive period in the rice plant life cycle.

Climatic and environmental parameters are monitored continuously, soil moisture is measured in real time both at constant soil depths and whole soil profiles, plant growth and canopy development parameters are measured with digital imagery and spectral reflectance techniques (NDVI), plant water status is monitored with remote sensing techniques (infrared thermal imagery).

Yield components and phonological traits are measured precisely in each plot. Output data are used to establish and calibrate a model-based phenotyping system that relates physiological traits to rice crop field performance. The field rainout shelter phenotyping is complemented with a precise lyzimetric system that captures the dynamics of plant water use and canopy development in semi-controlled greenhouse conditions.

For more information contact: Rachid Serraj (R.Serraj@cgiar.org) and/or Steve Klassen (stephen.p.Klassen@gmail.com).

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