A5067980994- Wheat and Barley Genetics and Pathology
- Plant Disease Resistance and Genetics
- Chromosomal and Genetic Variations
- Mycotoxins in Agriculture and Food
- Sunflower and Safflower Cultivation
- Plant Pathogens and Fungal Diseases
- Genetics and Plant Breeding
- Soybean genetics and cultivation
- Plant tissue culture and regeneration
- Plant Pathogens and Resistance
- Plant pathogens and resistance mechanisms
- Genetic Mapping and Diversity in Plants and Animals
- Nitrogen and Sulfur Effects on Brassica
- Bioenergy crop production and management
- Crop Yield and Soil Fertility
- Biofuel production and bioconversion
- Plant nutrient uptake and metabolism
- Genetic diversity and population structure
- Plant Genetic and Mutation Studies
- Microtubule and mitosis dynamics
- Powdery Mildew Fungal Diseases
- Berry genetics and cultivation research
- Yeasts and Rust Fungi Studies
- Photosynthetic Processes and Mechanisms
- Polysaccharides and Plant Cell Walls
University of Nebraska–Lincoln
2022-2025
United States Department of Agriculture
2004-2023
Agricultural Research Service
2004-2023
North Dakota State University
2013-2022
Huazhong Agricultural University
2004-2016
Edward T. Schafer Agricultural Research Center
2006-2007
Dakota State University
2007
Washington State University
1997-2004
Miami University
2001
Nanjing Agricultural University
1989
Abstract Chromosome engineering is a useful strategy for transfer of alien genes from wild relatives into modern crops. However, this has not been extensively used gene introgression in most crops due to low efficiency conventional cytogenetic techniques. Here, we report an improved scheme chromosome efficient elimination large amount goatgrass (Aegilops speltoides) chromatin surrounding Sr39, that provides resistance multiple stem rust races, including Ug99 (TTKSK) wheat. The wheat ph1b...
Abstract The transfer of alien genes to crop plants using chromosome engineering has been attempted infrequently in tetraploid durum wheat (Triticum turgidum L. subsp. durum). Here, we report a highly efficient approach for the two conferring resistance stem rust race Pgt-TTKSK (Ug99) from goatgrass (Aegilops speltoides) wheat. line DAS15, carrying gene Sr47 derived Ae. speltoides, was crossed, and backcrossed, 5D(5B) aneuploids induce homeologous pairing. After final cross ‘Rusty’ durum,...
Biomass recalcitrance and plant lodging are two complex traits that tightly associate with cell wall structure features. Although genetic modification of walls can potentially reduce for enhancing biomass saccharification, it remains a challenge to maintain normal growth enhanced yield resistance in transgenic plants. Sucrose synthase (SUS) is key enzyme regulate carbon partitioning by providing UDP-glucose as substrate cellulose other polysaccharide biosynthesis. SUS plants have reportedly...
Fusarium head blight (FHB), caused mainly by graminearum Schwabe, is a destructive disease of wheat ( Triticum spp.) in humid growth conditions throughout the world. Genetic resistance host plant considered most effective and sustainable method defense against FHB; however, only limited sources are available wheat. Relatives have proven to be an invaluable gene pool for improvement. The objective this study was explore relatives FHB resistance. We evaluated 293 lines derived from crosses...
Meiosis includes two successive divisions of the nucleus with one round DNA replication and leads to formation gametes half chromosomes mother cell during sexual reproduction. It provides a cytological basis for gametogenesis inheritance in eukaryotes. Meiotic division is complex dynamic process that involves number molecular cellular events, such as chromosome replication, pairing, synapsis recombination, segregation, cytokinesis. maintains genome stability integrity over life cycles. On...
Durum wheat ( Triticum turgidum L. subsp. durum ) production in North America recent years has been seriously threatened by epidemics of Fusarium head blight (FHB), caused mainly graminearum Schwabe [teleomorph Gibberella zeae (Schw.) Petch]. Deployment FHB‐resistant cultivars considered the most effective and cost‐efficient strategy to combat this disease; however, progress developing hindered a lack sources resistance. The objective study is identify tetraploid germplasm that could be used...
Wheat, including durum and common wheat, respectively, is an allopolyploid with two or three homoeologous subgenomes originating from diploid wild ancestral species. The wheat genome’s polyploid origin consisting of just ancestors has constrained its genetic variation, which bottlenecked improvement. However, a large number relatives, cultivated crop species (e.g., barley rye), grass species, Moreover, each ancestor relative many other related subspecies that have evolved to inhabit specific...
Aegilops speltoides (2n=2x=14, genome SS) is a wild relative of wheat and donor useful traits for improvement. Several whole-genome studies compared genic regions from the Sitopsis section found that Ae. most closely related to B subgenome but not its direct progenitor. The results showed ancestor diverged more than 4 MYA either has yet been discovered, or extinct. To further explore evolutionary relationship between develop chromosome paints, we performed comparative analysis repetitive...
ABSTRACT Fusarium head blight (FHB), caused mainly by graminearum Schwabe, is a serious disease of wheat ( Triticum spp.) worldwide. Host resistance has proven the most effective method controlling FHB in common T. aestivum L., 2 n = 6 x 42, genomes AABBDD). Progress breeding for durum turgidum L. ssp. , 4 28, AABB), however, been limited lack sources. Fortunately, large number tetraploid relatives, which represent gene pool improvement durum. The objective this study was to search sources...
ABSTRACT Stem rust (caused by Puccinia graminis Pers.:Pers. f. sp. tritici Eriks. & E. Henn.), a devastating disease of wheat ( Triticum aestivum L.), was effectively controlled worldwide for the past 50 yr deployment stem resistance Sr ) genes in cultivars. However, new race, TTKSK (known as Ug99 or TTKS) that emerged eastern Africa, is cause concern because it has broad virulence to currently deployed genes. To identify potentially sources effective against Ug99, we evaluated and...
With 2 figures and 1 table Abstract The Rf1 gene in sunflower can effectively restore the pollen fertility of PET1 cytoplasm male-sterile lines has been widely used commercial hybrid production. Identifying molecular markers tightly linked to this will be useful marker-assisted selection develop maintainer restorer lines. mapped Linkage Group (LG) 13 public simple sequence repeat (SSR) map by aligning maps constructed from different populations only one SSR marker was reported loosely Rf1....
Abstract Perennial wheat offers a new solution to the long-standing problems of soil erosion and degradation associated with conventional annual small-grain cropping systems in Pacific Northwest region. Using classical breeding methods, types have been developed that maintain key characteristics wheat, but continue grow after harvest. Following dormancy winter, growth is initiated from roots or crowns spring, allowing crop be harvested every fall. By retaining constant cover over multiple...