Marnin Wolfe
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View article: Sustaining public plant breeding programs across generations
Sustaining public plant breeding programs across generations Open
Plant breeding in the public sector is a multigenerational process that creates new plant varieties intended to meet current and future needs of society. Many public sector plant breeding programs are over a century old, and they continue …
View article: Genomic Predicted cross performance: a tool for optimizing parental combinations in breeding programs
Genomic Predicted cross performance: a tool for optimizing parental combinations in breeding programs Open
Background Genomic prediction is an effective method for shortening breeding cycles and accelerating genetic gains. Traditionally, genomic prediction has focused on estimating ‘additive’ breeding values for individual genotypes. However, f…
View article: Increasing cassava root yield: Additive-dominant genetic models for selection of parents and clones
Increasing cassava root yield: Additive-dominant genetic models for selection of parents and clones Open
Genomic selection has been promising in situations where phenotypic assessments are expensive, laborious, and/or inefficient. This work evaluated the efficiency of genomic prediction methods combined with genetic models in clone and parent…
View article: Climate change challenges, plant science solutions
Climate change challenges, plant science solutions Open
Climate change is a defining challenge of the 21st century, and this decade is a critical time for action to mitigate the worst effects on human populations and ecosystems. Plant science can play an important role in developing crops with …
View article: Parsimonious genotype by environment interaction covariance models for cassava (Manihot esculenta)
Parsimonious genotype by environment interaction covariance models for cassava (Manihot esculenta) Open
The assessment of cassava clones across multiple environments is often carried out at the uniform yield trial, a late evaluation stage, before variety release. This is to assess the differential response of the varieties across the testing…
View article: Exploring genotype by environment interaction on cassava yield and yield related traits using classical statistical methods
Exploring genotype by environment interaction on cassava yield and yield related traits using classical statistical methods Open
Variety advancement decisions for root quality and yield-related traits in cassava are complex due to the variable patterns of genotype-by-environment interactions (GEI). Therefore, studies focused on the dissection of the existing pattern…
View article: Breedbase: a digital ecosystem for modern plant breeding
Breedbase: a digital ecosystem for modern plant breeding Open
Modern breeding methods integrate next-generation sequencing and phenomics to identify plants with the best characteristics and greatest genetic merit for use as parents in subsequent breeding cycles to ultimately create improved cultivars…
View article: Plant Breeding for Intercropping in Temperate Field Crop Systems: A Review
Plant Breeding for Intercropping in Temperate Field Crop Systems: A Review Open
Monoculture cropping systems currently dominate temperate agroecosystems. However, intercropping can provide valuable benefits, including greater yield stability, increased total productivity, and resilience in the face of pest and disease…
View article: Andrade et al FPS 2022
Andrade et al FPS 2022 Open
Dataset applied for the Genomic prediction analysis in Genomic prediction for parent and clone selection manuscript submitted in Frontiers in Plant Science
View article: Genomic mating in outbred species: predicting cross usefulness with additive and total genetic covariance matrices
Genomic mating in outbred species: predicting cross usefulness with additive and total genetic covariance matrices Open
Diverse crops are both outbred and clonally propagated. Breeders typically use truncation selection of parents and invest significant time, land, and money evaluating the progeny of crosses to find exceptional genotypes. We developed and t…
View article: Multi-Species Genomics-Enabled Selection for Improving Agroecosystems Across Space and Time
Multi-Species Genomics-Enabled Selection for Improving Agroecosystems Across Space and Time Open
Plant breeding has been central to global increases in crop yields. Breeding deserves praise for helping to establish better food security, but also shares the responsibility of unintended consequences. Much work has been done describing a…
View article: Effectiveness of genomic selection for improving provitamin A carotenoid content and associated traits in cassava
Effectiveness of genomic selection for improving provitamin A carotenoid content and associated traits in cassava Open
Global efforts are underway to develop cassava with enhanced levels of provitamin A carotenoids to sustainably meet increasing demands for food and nutrition where the crop is a major staple. Herein, we tested the effectiveness of genomic …
View article: Genomic mating in outbred species: predicting cross usefulness with additive and total genetic covariance matrices
Genomic mating in outbred species: predicting cross usefulness with additive and total genetic covariance matrices Open
Diverse crops are both outbred and clonally propagated. Breeders typically use truncation selection of parents and invest significant time, land and money evaluating the progeny of crosses to find exceptional genotypes. We developed and te…
View article: Genome-wide association analysis reveals new insights into the genetic architecture of defensive, agro-morphological and quality-related traits in cassava
Genome-wide association analysis reveals new insights into the genetic architecture of defensive, agro-morphological and quality-related traits in cassava Open
Cassava ( Manihot esculenta ) is one of the most important starchy root crops in the tropics due to its adaptation to marginal environments. Genetic progress in this clonally propagated crop can be accelerated through the discovery of mark…
View article: Genomic characterization of Ugandan smallholder farmer‐preferred cassava varieties
Genomic characterization of Ugandan smallholder farmer‐preferred cassava varieties Open
Understanding the genetic relationships among farmer‐preferred cassava ( Manihot esculenta Crantz) varieties is indispensable to genetic improvement efforts. In this study, we present a genetic analysis of 547 samples of cassava grown by 1…
View article: Genomic prediction and quantitative trait locus discovery in a cassava training population constructed from multiple breeding stages
Genomic prediction and quantitative trait locus discovery in a cassava training population constructed from multiple breeding stages Open
Assembly of a training population (TP) is an important component of effective genomic selection‐based breeding programs. In this study, we examined the power of diverse germplasm assembled from two cassava ( Manihot esculenta Crantz) breed…
View article: Genetic Correlation, Genome-Wide Association and Genomic Prediction of Portable NIRS Predicted Carotenoids in Cassava Roots
Genetic Correlation, Genome-Wide Association and Genomic Prediction of Portable NIRS Predicted Carotenoids in Cassava Roots Open
Random forests (RF) was used to correlate spectral responses to known wet chemistry carotenoid concentrations including total carotenoid content (TCC), all-trans β-carotene (ATBC), violaxanthin (VIO), lutein (LUT), 15-cis beta-carotene (15…
View article: Alternative Approaches for Assessing Cassava Brown Streak Root Necrosis to Guide Resistance Breeding and Selection
Alternative Approaches for Assessing Cassava Brown Streak Root Necrosis to Guide Resistance Breeding and Selection Open
Cassava brown streak disease (CBSD) caused by the rapidly evolving cassava brown streak viruses (CBSVs), causes immense yield losses to the cassava value chain in eastern and southern Africa. Western Africa, another region that heavily dep…
View article: Historical Introgressions from a Wild Relative of Modern Cassava Improved Important Traits and May Be Under Balancing Selection
Historical Introgressions from a Wild Relative of Modern Cassava Improved Important Traits and May Be Under Balancing Selection Open
Introgression of alleles from wild relatives has often been adaptive in plant breeding. However, the significance of historical hybridization events in modern breeding is often not clear. Cassava (Manihot esculenta) is among the most impor…
View article: Improving root characterisation for genomic prediction in cassava
Improving root characterisation for genomic prediction in cassava Open
Cassava is widely cultivated due to its high drought tolerance and high carbohydrate-containing storage roots. The lack of uniformity and irregular shape of storage roots within and between genotypes poses significant constraints on harves…
View article: Introgressed <i>Manihot glaziovii</i> Alleles in Modern Cassava Germplasm Benefit Important Traits and Are Under Balancing Selection
Introgressed <i>Manihot glaziovii</i> Alleles in Modern Cassava Germplasm Benefit Important Traits and Are Under Balancing Selection Open
1. Abstract Introgression of alleles from wild relatives has often been adaptive, usually for disease resistance, in plant breeding. However, the significance of historical hybridization events in modern breeding is often not clear. Cassav…
View article: Genetic Variation and Trait Correlations in an East African Cassava Breeding Population for Genomic Selection
Genetic Variation and Trait Correlations in an East African Cassava Breeding Population for Genomic Selection Open
Cassava ( Manihot esculenta Crantz) is a major source of dietary carbohydrates for >700 million people globally. However, its long breeding cycle has slowed the rate of genetic gain for target traits. This study aimed to asses genetic vari…
View article: Supplementary Figures and Tables
Supplementary Figures and Tables Open
Supplementary Figures (and captions for the Sup. Tables) associated with Wolfe et al. Introgressed Manihot glaziovii Alleles in Modern Cassava Germplasm Benefit Important Traits and Are Under Balancing Selection
View article: Supplementary Tables
Supplementary Tables Open
Supplementary Tables associated with Wolfe et al. Introgressed Manihot glaziovii Alleles in Modern Cassava Germplasm Benefit Important Traits and Are Under Balancing Selection
View article: Training Population Optimization for Prediction of Cassava Brown Streak Disease Resistance in West African Clones
Training Population Optimization for Prediction of Cassava Brown Streak Disease Resistance in West African Clones Open
Cassava production in the central, southern and eastern parts of Africa is under threat by cassava brown streak virus (CBSV). Yield losses of up to 100% occur in cases of severe infections of edible roots. Easy illegal movement of planting…
View article: Genome-wide association mapping and genomic prediction for CBSD resistance in Manihot esculenta
Genome-wide association mapping and genomic prediction for CBSD resistance in Manihot esculenta Open
Cassava ( Manihot esculenta Crantz) is an important security crop that faces severe yield loses due to cassava brown streak disease (CBSD). Motivated by the slow progress of conventional breeding, genetic improvement of cassava is undergoi…
View article: Prospects for Genomic Selection in Cassava Breeding
Prospects for Genomic Selection in Cassava Breeding Open
Cassava ( Manihot esculenta Crantz) is a clonally propagated staple food crop in the tropics. Genomic selection (GS) has been implemented at three breeding institutions in Africa to reduce cycle times. Initial studies provided promising es…