ArticleFrontiers in plant science2021
Genetic Gains for Yield and Virus Disease Resistance of Cassava Varieties Developed Over the Last Eight Decades in Uganda.
Article in Frontiers in plant science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 23 citations in OpenAlex.
- Genomic prediction accuracy for low hydrogen cyanide selection in fresh cassava roots. Comparative model analysis.BMC plant biology · 2026Article
- Creating resistance to the whiteflyFrontiers in plant science · 2026Article
- Proteomic analysis reveals dynamic expression related to malondialdehyde in cassava in response to cassava bacterial blight.Scientific reports · 2025Article
- Genetic Variation and Heritability for Hydrogen Cyanide in Fresh Cassava Roots: Implications for Low-Cyanide Cassava Breeding.Plants (Basel, Switzerland) · 2024Article
- Genetic trends in the Zimbabwe's national maize breeding program over two decades.Frontiers in plant science · 2024Article
- Effect of sterilants and plant growth regulators in regenerating commonly used cassava cultivars at the Kenyan coast.Heliyon · 2023Article
- Water deficit and potassium affect carbon isotope composition in cassava bulk leaf material and extracted carbohydrates.Frontiers in plant science · 2023Article
- Mutations in DNA polymerase δ subunit 1 co-segregate with CMD2-type resistance to Cassava Mosaic Geminiviruses.Nature communications · 2022Article
- Utility of Ugandan genomic selection cassava breeding populations for prediction of cassava viral disease resistance and yield in West African clones.Frontiers in plant science · 2022Article
- Risk factors associated with cassava brown streak disease dissemination through seed pathways in Eastern D.R. Congo.Frontiers in plant science · 2022Article
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9 authors at 2 institutions in 1 country.
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Abstract
Achieving food security for an ever-increasing human population requires faster development of improved varieties. To this end, assessment of genetic gain for key traits is important to inform breeding processes. Despite the improvements made to increase production and productivity of cassava in Uganda at research level, there has been limited effort to quantify associated genetic gains. Accordingly, a study was conducted in Uganda to assess whether or not genetic improvement was evident in selected cassava traits using cassava varieties that were released from 1940 to 2019. Thirty-two varieties developed during this period, were evaluated simultaneously in three major cassava production zones; central (Namulonge), eastern (Serere), and northern (Loro). Best linear unbiased predictors (BLUPs) of the genotypic value for each clone were obtained across environments and regressed on order of release year to estimate annual genetic gains. We observed that genetic trends were mostly quadratic. On average, cassava mosaic disease (CMD) resistance increased by 1.9% per year, while annual genetic improvements in harvest index (0.0%) and fresh root yield (-5 kg per ha or -0.03% per ha) were non-substantial. For cassava brown streak disease (CBSD) resistance breeding which was only initiated in 2003, average annual genetic gains for CBSD foliar and CBSD root necrosis resistances were 2.3% and 1.5%, respectively. It's evident that cassava breeding has largely focused on protecting yield against diseases. This underpins the need for simultaneous improvement of cassava for disease resistance and high yield for the crop to meet its current and futuristic demands for food and industry.
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