A5073792358- Wheat and Barley Genetics and Pathology
- Genetics and Plant Breeding
- Crop Yield and Soil Fertility
- Genetic Mapping and Diversity in Plants and Animals
- Plant Disease Resistance and Genetics
- Turfgrass Adaptation and Management
- Food composition and properties
- Mycotoxins in Agriculture and Food
- Plant responses to elevated CO2
- Genetic and phenotypic traits in livestock
- Chromosomal and Genetic Variations
- Plant Virus Research Studies
- Plant Pathogens and Fungal Diseases
- Plant Pathogens and Resistance
- Nitrogen and Sulfur Effects on Brassica
- Agriculture, Plant Science, Crop Management
- Soybean genetics and cultivation
- Plant tissue culture and regeneration
- Climate change impacts on agriculture
- Seed Germination and Physiology
- Yeasts and Rust Fungi Studies
- Weed Control and Herbicide Applications
- Spectroscopy and Chemometric Analyses
- Agricultural Productivity and Crop Improvement
- Horticultural and Viticultural Research
Kansas State University
2016-2025
University of Kentucky HealthCare
2025
STZ eyetrial
2019
United States Department of Agriculture
2017
Agricultural Research Service
2017
Center for Grain and Animal Health Research
2011
Fort Hays State University
2011
Texas A&M University
2000
Weihenstephan-Triesdorf University of Applied Sciences
1966-1974
Wheat (Triticum spp.) is one of the founder crops that likely drove Neolithic transition to sedentary agrarian societies in Fertile Crescent more than 10,000 years ago. Identifying genetic modifications underlying wheat's domestication requires knowledge about genome its allo-tetraploid progenitor, wild emmer (T. turgidum ssp. dicoccoides). We report a 10.1-gigabase assembly 14 chromosomes tetraploid wheat, as well analyses gene content, architecture, and diversity. With this fully assembled...
Climate models predict greater increases in nighttime temperature the future. The impacts of high on wheat ( Triticum aestivum L.) are not well understood. Objectives this research were to quantify impact temperatures during reproductive development phenology, physiological, vegetative, and yield traits wheat. Two spring cultivars (Pavon‐76 Seri‐82) grown at optimum (day/night, 24/14°C; 16/8 h light/dark photoperiod) from sowing booting. Thereafter, plants exposed four different (14, 17, 20,...
Drought and high temperature often occurs simultaneously, causing significant yield losses in wheat (Triticum aestivum L.). The objectives of this study were to: (i) quantify independent combined effects drought stress on synthetic hexaploid genotypes at anthesis 21 days after anthesis; (ii) determine whether responses to varied among genotypes. Four two spring grown from emergence (Experiment I) II), with full irrigation 21/15°C day/night temperature. Thereafter, four treatments imposed for...
Abstract Rye ( Secale cereale L.) is an exceptionally climate-resilient cereal crop, used extensively to produce improved wheat varieties via introgressive hybridization and possessing the entire repertoire of genes necessary enable hybrid breeding. allogamous only recently domesticated, thus giving cultivated ryes access a diverse exploitable wild gene pool. To further enhance agronomic potential rye, we produced chromosome-scale annotated assembly 7.9-gigabase rye genome validated its...
Wheat ( Triticum aestivum L.) cultivars must possess suitable end‐use quality for release and consumer acceptability. However, breeding traits is often considered a secondary target relative to yield largely because of amount seed needed expense. Without testing selection, many undesirable materials are advanced, expending additional resources. Here, we develop validate whole‐genome prediction models phenotypes in the CIMMYT bread wheat program. Model accuracy was tested using forward on...
High temperature (heat) stress during grain filling is a major problem in most of the wheat growing areas. Developing heat tolerant cultivars has become principal breeding goal Southern and Central Great Plain areas USA. Traits associated with high tolerance can be used to develop wheat. The present study was conducted identify chromosomal regions thylakoid membrane damage (TMD), plasmamembrane (PMD), SPAD chlorophyll content (SCC), which are indicative tolerance.
Wheat ( Triticum aestivum L.) breeding programs test experimental lines in multiple locations over years to get an accurate assessment of grain yield and stability. Selections early generations the pipeline are based on information from only one or few thus materials advanced with little knowledge genotype × environment interaction (G E) effects. Later, large trials conducted several assess performance more across environments. Genomic selection (GS) models that include G E covariates allow...
There is limited information on agronomic practices affecting wheat ( Triticum aestivum L.) yield in intensively managed dryland systems despite the opportunity to narrow existing gap Y G ). We used a unique database of 100 field‐years entered Kansas Wheat Yield Contest during 2010 2017 harvest seasons (i) quantify , (ii) describe management, and (iii) identify management opportunities weather patterns associated with yield. simulated water‐limited w ) using Simple Simulation Modeling–Wheat...
Pre-harvest sprouting (PHS) in wheat can cause substantial reduction grain yield and end-use quality. Grain color (GC) together with other components affect PHS resistance. Several quantitative trait loci (QTL) have been reported for resistance, two of them on chromosome 3AS (TaPHS1) 4A cloned. To determine genetic architecture GC relationships the traits, a genome-wide association study (GWAS) was conducted by evaluating panel 185 U.S. elite breeding lines cultivars rates spikes both...
Abstract Key message The first cytological characterization of the 2N v S segment in hexaploid wheat; complete de novo assembly and annotation segment; frequency is increasing associated with higher yield. Aegilops ventricosa translocation has been utilized breeding disease-resistant wheat crops since early 1990s. This known to possess several important resistance genes against multiple diseases including root knot nematode, stripe rust, leaf rust stem rust. More recently, this blast, an...
Abstract Allopolyploidy greatly expands the range of possible regulatory interactions among functionally redundant homoeologous genes. However, connection between emerging complexity and expression phenotypic diversity in polyploid crops remains elusive. Here, we use diverse wheat accessions to map quantitative trait loci (eQTL) evaluate their effects on population-scale variation homoeolog dosage. The relative contribution cis - trans -eQTL is strongly affected by both selection demographic...
Abstract The goal of wheat breeding is the development superior cultivars tailored to specific environments, and identification promising crosses crucial for success programs. Although genomic estimated values were developed estimate additive effects genotypes before testing as parents, application has focused on predicting performance candidate lines, ignoring non-additive genetic effects. However, are hypothesized be especially important in allopolyploid species due interaction between...
ABSTRACT High temperature (HT) stress is highly detrimental to crop productivity but there limited variability for this trait among wheat ( Triticum aestivum L.) cultivars. The objectives of research were screen wild wheats Aegilops species) tolerance HT at the reproductive stage and measure physiological yield traits associated with tolerance. Fifty‐two accessions belonging five species evaluated optimum (OT) (25/19°C day/night) (36/30°C) a photoperiod 18 h. Stress was imposed anthesis...
Abstract High temperature is a major environmental factor that limits wheat ( Triticum aestivum L.) productivity. Climate models predict greater increases in night‐time than daytime temperature. The objective of this research was to compare the effects high and temperatures during anthesis on physiological (chlorophyll fluorescence, chlorophyll concentration, leaf level photosynthesis, membrane damage), biochemical (reactive oxygen species ROS ) concentration antioxidant capacity leaves),...
Wheat head blast (WHB), caused by the fungus Magnaporthe oryzae pathotype triticum, is a devastating disease affecting South America and Asia. Despite 30 years of intensive effort, 2NVS translocation from Aegilops ventricosa contains only useful source resistance to WHB effective against M. triticum isolates. The objective this study was identify non-2NVS sources among elite cultivars, breeding lines, landraces, wild-relative accessions. Over 780 accessions were evaluated under field...
Plant breeding has increased the yield of winter wheat (Triticum aestivum L.) over decades, and rate genetic gain been faster under high fertility in some countries. However, this response is not universal, limited information exists on physiological traits underlying interaction between varieties fertilization. Thus, our objectives were to identify key shifts crop phenotype selection for quality, determine whether historical modern respond differently in-furrow fertilizer. Factorial field...
Grain protein concentration and composition are key factors affecting winter wheat quality influenced by genotype, available fertility, growing conditions. These same parameters can affect free asparagine in grain, elevated lead to acrylamide production baked food products, which be a health concern. The objectives of this study were determine the effect nitrogen (N), sulfur (S) fertility on concentration, quality, dough rheology, grown S-deficient soils. Treatments arranged 3 × 2 4...
A great majority of dryland wheat producers are reluctant to intensify management due the assumption that lack water availability is most critical factor limiting yield and thus, response intensification would be limited. We conducted on-farm field experiments across three locations two growing seasons in Kansas using 21 modern winter genotypes grown under either standard (SM) or intensified (IM) systems. The goals this study were (i) determine whether SM adopted adequate reach achievable...