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ARS Home » Southeast Area » Raleigh, North Carolina » Plant Science Research » Research » Research Project #441276

Research Project: Drought Resiliency for the Farm- Yield Limitations of Commercial Soybean Varieties under Drought: Identifying and Overcoming Weaknesses

Location: Plant Science Research

Project Number: 6070-11000-010-019-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Oct 1, 2021
End Date: Sep 30, 2022

Objective:
This project will characterize a leaf gas exchange trait in soybean breeding lines developed by collaborators on a grant funded by the United Soybean Board.

Approach:
The project will screen soybean breeding lines for a leaf gas exchange trait associated with increased water use efficiency (contributing to both drought and ozone tolerance). The focus will be on breeding lines developed by soybean breeders of the USB Drought Team to identify parental sources of drought tolerance that exhibit the water use efficiency trait. The lines will be grown under field plots or in open-top field chambers. Portable leaf gas exchange instruments will be used to measure photosynthesis and stomatal conductance to calculate water use efficiency at critical developmental stages.