LeasyScan: 3D scanning of crop canopy plus seamless monitoring of water use to harness the genetics of key traits for drought adaptation

Vadez, V and Kholova, J and Srikanth, M and Rekha, B and Tharanya, M and Sivasakthi, K and Alimagham, M and Karthika, G and Keerthi, C (2017) LeasyScan: 3D scanning of crop canopy plus seamless monitoring of water use to harness the genetics of key traits for drought adaptation. In: InterDrought-V, February 21-25, 2017, Hyderabad, India.

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Abstract

With the genomics revolution in full swing, relevant phenotyping is now a main bottleneck. New imaging technologies provide opportunities for easier, faster and more informative phenotyping of many plant parameters. However, it is critical that the development of automated phenotyping be driven by a clear framing of target phenotypes rather than by a technological push, especially for complex constraints. Previous studies on drought adaptation shows the importance of water availability during the grain filling period, which depends on traits controlling the plant water budget at earlier stages. We will then discuss “cause” and “consequence” in phenotypes. Drawing on this, a phenotyping platform (LeasyScan) was developed to target canopy development and conductance traits. Based on a novel 3D scanning technique to capture leaf area development continuously and a scanner-to-plant concept to increase imaging throughput, LeasyScan is also equipped with 1488 analytical scales to measure transpiration seamlessly. Examples of the first applications are presented: (i) to compare the leaf area development pattern of pearl millet breeding material targeted to different agro-ecological zones, (ii) for the mapping of QTLs for vigour traits in chickpea, shown to co-map with an earlier reported “drought tolerance” QTL; (iii) for the mapping of leaf area development in pearl millet; (iv) for assessing the transpiration response to high vapour pressure deficit in different crops. This new platform has the potential to phenotype traits controlling plant water use at a high rate and precision, opening the opportunity to harness their genetics towards breeding improved varieties.

Item Type: Conference or Workshop Item (Paper)
Divisions: Research Program : Innovation Systems for the Drylands (ISD)
CRP: UNSPECIFIED
Uncontrolled Keywords: Drought adaptation, Genetics, Genomics, Phenotyping, 3D scanning technique, Leaf area development, LeasyScan, Phenotype traits, Water use
Subjects: Others > Drought
Others > Genetics and Genomics
Others > Plant Physiology
Depositing User: Mr Ramesh K
Date Deposited: 21 Nov 2017 10:01
Last Modified: 21 Nov 2017 10:01
URI: http://oar.icrisat.org/id/eprint/10293
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