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Soybean rust-resistant and tolerant varieties identified through the Pan-African Trial Network
Vitor Rampazzo Favoretto1, Harun Muthuri Murithi2,3, Erica Pontes Leles4
1Cenex Harvest States (CHS) Agronomy, Willmar, MN, USA.
Pest Management Science
|January 31, 2025
Summary
Researchers identified soybean cultivars resistant to rust, a major disease impacting African crop yields. This finding is crucial for boosting soybean production and food security in Sub-Saharan Africa.
Area of Science:
- Agricultural Science
- Plant Pathology
- Genetics
Background:
- Global soybean demand is rising, with Sub-Saharan Africa (SSA) showing significant production growth.
- Soybean productivity in SSA is less than half the global average, primarily due to diseases like soybean rust.
- Limited data exists on rust resistance in African soybean cultivars, hindering effective disease management.
Purpose of the Study:
- To assess the rust-resistance levels of soybean cultivars grown in Sub-Saharan Africa.
- To identify soybean varieties with enhanced resistance or tolerance to soybean rust.
- To provide data supporting the selection of improved cultivars for African agriculture.
Main Methods:
- Conducted extensive soybean varietal trials across diverse locations in Africa.
- Collected and analyzed rust-resistance data from 370 individual trials spanning 2015-2022.
- Evaluated 81 cultivars based on their performance and reaction to soybean rust.
Main Results:
- Identified six soybean cultivars (Black Hawk, Dundee, Egret, Heron, Ibis, Peka 06) exhibiting resistance to soybean rust.
- Classified an additional 12 cultivars as tolerant to the disease.
- Provided a critical dataset on rust resistance for African soybean varieties.
Conclusions:
- This study represents a significant advancement in enhancing soybean productivity in Africa.
- The identified resistant and tolerant cultivars can aid in managing soybean rust and improving crop yields.
- Further research is ongoing to address other challenges impacting crop production in the region.
