Geoffrey P. Morris

Pangenomics and machine learning reveal genetic variation to optimize carotenoids in sorghum grain

This study uses pangenomics and machine learning to identify genetic markers associated with carotenoid accumulation in sorghum, revealing structural variation and multi-locus genetic architecture.

Phenotyping replication is a major determinant of genomic predictive ability in sweet sorghum (Sorghum bicolor Moench)

The paper evaluates how phenotyping replication, training population size, and genomic relatedness affect genomic predictive ability in sweet sorghum breeding programs.

Functional genomic map of local adaptation in sorghum to guide allele mining

This study identifies genomic regions and variant types associated with local adaptation in sorghum using genotype-environment associations, highlighting the importance of cis-regulatory elements.

Field and lab phenomics facilitate detection of genetic variation for iron deficiency chlorosis tolerance in sorghum

The paper develops field and lab phenotyping methods to detect genetic variation for iron deficiency chlorosis tolerance in sorghum, showing improved genetic signal detection with filtered data and controlled-environment assays.

A stable genomic variant for photoperiodic flowering plasticity to enhance grain mold escape and yield stability in sorghum

The paper identifies stable genomic loci associated with photoperiodic flowering and grain mold resistance in sorghum, providing tools for breeding climate-resilient varieties.

Epistatic fitness landscapes emerge from parallel adaptive walks in breeding network metapopulations

The paper simulates breeding metapopulations to show how epistasis increases with genetic admixture and highlights its importance in crop breeding.

Population genomic structure of sorghum landraces across landscape, environment and culture

This study analyzes the population genomic structure of sorghum landraces to determine how environmental and cultural factors influence genetic diversity across different regions and time periods.

Genomic approaches to build de novo elite breeding gene pools from locally-adapted landraces

The paper develops genomic approaches to build elite gene pools from locally-adapted landraces, finding that QGI effectively identifies elite pairs while cis-elite crosses yield better genetic gain.

Interchromosomal Linkage Disequilibrium Analysis Reveals Strong Indications of Sign Epistasis in Wheat Breeding Families

The paper analyzes interchromosomal linkage disequilibrium in wheat breeding families to detect sign epistasis, finding 19 regions with strong disequilibrium that support the hypothesis over additive selection.

Ancient pangenomic origins of noncanonical NLR genes underlying the recent evolutionary rescue of a staple crop

The paper identifies the pangenomic origins and molecular basis of RMES1, a noncanonical NLR gene that enabled evolutionary rescue in sorghum by disrupting aphid feeding through global immunity activation.

Delivering trait-enhanced varieties to African smallholders through a pangenomic breeding network

The paper demonstrates how a global pangenomic breeding network can develop and deploy drought and pest-resistant sorghum varieties for smallholder farmers in Niger.

Developing future resilience from signatures of adaptation across the sorghum pangenome

This paper constructs a sorghum pangenome and identifies trait-associated variants to inform climate-aware genome-enabled breeding strategies.

Loss of pleiotropic regulatory functions in Tannin1, the sorghum ortholog of Arabidopsis master regulator TTG1

The paper investigates the pleiotropic regulatory functions of Tannin1 in sorghum, finding no conserved pleiotropic effects in leaf tissue compared to Arabidopsis TTG1.

Improving genomic selection in hexaploid wheat with sub-genome additive and epistatic models

This study improves genomic selection in hexaploid wheat by incorporating additive and epistatic effects, leading to a 3% increase in prediction accuracy for grain yield.

An extended omnigenic model explains genome-phenome relationships for complex traits in global sorghum diversity

The paper tests an extended omnigenic model to explain the geometric distribution of effect sizes in complex traits using sorghum yield data, finding evidence for regulatory effects both in space and time.

Crop modeling suggests limited transpiration would increase yield of sorghum across drought-prone regions of the United States

The paper uses a crop model to show that breeding sorghum for limited transpiration could increase yield in drought-prone US regions without tradeoffs.

Field phenomics reveals genetic variation for transpiration response to vapor pressure deficit in sorghum

The paper tests genetic variation for limited transpiration in sorghum under field conditions and evaluates canopy temperature as a surrogate trait.

Genomics and Phenomics Enabled Prebreeding Improved Early-Season Chilling Tolerance in Sorghum

This study uses phenomics and genomics to improve early-season chilling tolerance in sorghum through marker-assisted breeding, showing up to 24% performance improvement in lines with the CT allele.

A Genomics Resource for Genetics, Physiology, and Breeding of West African Sorghum

The paper develops a genomic resource for West African sorghum by characterizing a diverse panel and identifying QTLs for flowering time and plant height.

Genome-wide mapping and prediction of plant architecture in a sorghum nested association mapping population

The paper identifies quantitative trait loci (QTL) for plant architecture traits in sorghum using a nested association mapping population and evaluates genomic prediction accuracy.

Dissecting adaptive traits with nested association mapping: Genetic architecture of inflorescence morphology in sorghum

This study identifies genetic factors controlling inflorescence morphology in sorghum using nested association mapping, revealing QTL associated with precipitation adaptation.

A sorghum Practical Haplotype Graph facilitates genome-wide imputation and cost-effective genomic prediction

This paper introduces a sorghum Practical Haplotype Graph (PHG) that enables accurate SNP calling and imputation from low-coverage sequencing data, improving genomic prediction accuracy and reducing genotyping costs.

Genetic Architecture of Chilling Tolerance in Sorghum Dissected with a Nested Association Mapping Population

The paper identifies genetic loci associated with chilling tolerance in sorghum using nested association mapping and finds some loci co-localize with historically selected genes.