Location: Soybean and Nitrogen Fixation Research
Project Number: 6070-21220-070-055-A
Project Type: Cooperative Agreement
Start Date: Oct 1, 2023
End Date: Sep 30, 2024
Objective:
1. Develop new breeding lines with increased test weight and high yield.
2. Implement coordinated multistate trials to determine the impact of genetics and geography on test weight using an array of extreme soybean types and extreme environments.
3. Determine the relation of test weight to seed size, seed quality, protein and oil content, sucrose concentration, amino acid content and yield.
Approach:
1) Advance breeding materials in the breeding pipeline. Screen 150-180 breeding lines from advanced yield trials in multiple-locations for test weight and seed composition to select lines with high yield, test weight and seed protein for regional yield trials. Form and advance the populations to incorporate the high test weight traits into the breeding process as new sources of higher test weight are identified. 2) In FY23, changes in test weight will be evaluated under two planting dates in replicated field trials. Two planting dates, ~30 days apart, will also be evaluated. Lines evaluated will include soybean types which exhibit high protein, small or large seed, and diverse breeding materials including commercial checks. Using the data collected from multiple years, we will determine what factors have the most impact on test weight. 3) The changes in test weight among our advanced soybean lines with varying seed size, protein and oil content, sucrose and yield will be evaluated. Diverse lines with variations in seed composition, seed size, maturity and yield will be evaluated and genotyped with SoySNP6k Infinium chips. The data will be used to determine the relation of test weight to seed size, seed quality, protein and oil content, sucrose concentration, amino acid content, yield and other agronomic traits across years and locations. Analyze test weight data collected across environments and maturity groups to determine the relation of test weight to seed size, seed quality, protein and oil content, sucrose concentration, amino acid content and yield. The results will be submitted for publication.
