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ARS Home » Pacific West Area » Maricopa, Arizona » U.S. Arid Land Agricultural Research Center » Plant Physiology and Genetics Research » Research » Research Project #431586

Research Project: Field Phenotyping of the International Durum Water Use Efficiency Panel

Location: Plant Physiology and Genetics Research

Project Number: 2020-11000-013-01-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 30, 2016
End Date: May 31, 2019

Objective:
The project seeks to characterize phenotypic variation in a widely used international wheat durum diversity panel at Maricopa, using the instruments of the TERRA REF field scanner and complementary manual, tractor and unmanned aerial vehicle (UAV or "drone") methods. This work will generate a high quality, high resolution dataset for association mapping of durum wheats adapted to irrigated, arid environments. Traits will include plant architecture, growth and phenology. The work will contribute directly to understanding the genetic control of commercially important traits of durum wheat and to improving our understanding of how the TERRA REF field scanner performs on crops beside energy sorghum.

Approach:
An international collaboration developed a panel of approximately 270 durum winter lines, which we have previously multiplied in Maricopa and phenotyped using a tractor system and our manual A-frame for imaging. We will plant the lines over two years (2017 and 2018) in alpha-lattice designs and evaluate using sensors of the TERRA REF field scanner and tractor and manual methods. Because these are off-season trials in the scanner-plot, the trials will be harvested prior to maturity in order to allow for mid-April plantings of energy sorghum trials. Thus, biomass at time of termination of the study will be used as a proxy for grain yield.