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ARS Home » Southeast Area » Raleigh, North Carolina » Soybean and Nitrogen Fixation Research » Research » Research Project #441336

Research Project: Drought Resiliency for the Farm- Yield Limitations of Commercial Soybean Varieties under Drought (Univ of MO)

Location: Soybean and Nitrogen Fixation Research

Project Number: 6070-21220-069-114-A
Project Type: Cooperative Agreement

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

Develop drought-tolerant cultivars adapted to locations in Missouri and other drought-prone U.S. environments that will aid farmers with variety choices and guide new public-private breeding efforts to fix the drought problem.

i) Yield evaluation of extreme wilting RILs in rainfed and irrigated fields: The study include 22 contrasting RILs (MG III) that were selected from 2 mapping populations derived from slowwilting PIs 567690 (MG III) and PI 567731 (MG III). These lines were tested in drought stress conditions in rainfed field in 2018 season in Portageville, MO. Based on canopy wilting scores, the RILs were arbitrarily grouped into two groups – slow-wilting (1 - 2.5) and fast-wilting (2.6 -5.0). These RILs will be evaluated for yield in 4-row plots in rainfed and irrigated conditions and for canopy wilting in 2021 and 2022. The objective of this study is to evaluate the impact of slow wilting trait on yield and seed quality traits, such as, 100-seed weight, seed protein and oil content.