A5041804579- Genetic and Environmental Crop Studies
- Plant Disease Resistance and Genetics
- Plant Pathogens and Fungal Diseases
- Plant Pathogens and Resistance
- Agricultural pest management studies
- Legume Nitrogen Fixing Symbiosis
- Plant pathogens and resistance mechanisms
- Agronomic Practices and Intercropping Systems
- Plant-Microbe Interactions and Immunity
- Plant Virus Research Studies
- Genetics and Plant Breeding
- Plant and Fungal Interactions Research
- Potato Plant Research
- Plant Pathogenic Bacteria Studies
- Plant Disease Management Techniques
- Lichen and fungal ecology
- Insect Resistance and Genetics
- Phosphorus and nutrient management
- Fungal Plant Pathogen Control
- Turfgrass Adaptation and Management
- Yeasts and Rust Fungi Studies
- Land Use and Ecosystem Services
- Leaf Properties and Growth Measurement
- Agricultural Research and Practices
- Agriculture, Plant Science, Crop Management
Agricultural Research Service
2015-2024
Center for Grain and Animal Health Research
2024
United States Department of Agriculture
2016-2024
Washington State University
2007-2022
U.S. Vegetable Laboratory
2008-2016
University of Idaho
2004-2005
White mold caused by the necrotrophic fungus Sclerotinia sclerotiorum (Lib.) de Bary limits common bean ( Phaseolus vulgaris L.) production in temperate climates. Disease resistance has been identified, but breeding is hampered a paucity of sources and complex inheritance, as numerous quantitative trait loci (QTL) conditioning partial have found. Our objectives were to characterize white found lines I9365‐31 VA19 construct comparative linkage map for all QTL identified date. Recombinant...
Dry pea production has increased substantially in North America over the last few decades. With this expansion, significant yield losses have been attributed to an escalation Fusarium root rots fields. Among most rot rotting pathogenic fungal species, solani fsp. pisi (Fsp) is one of main causal agents pea. High levels partial resistance Fsp identified plant genetic resources. Genetic offers best solutions control fungus. A recombinant inbred population segregating for high resistance,...
Lentil (Lens culinaris Medikus) is an important source of protein for people in developing countries. Aphanomyces root rot (ARR) has emerged as one the most devastating diseases affecting lentil production. In this study, we applied two complementary quantitative trait loci (QTL) analysis approaches to unravel genetic architecture underlying complex trait. A recombinant inbred line (RIL) population and association mapping were genotyped using genotyping by sequencing (GBS) discover novel...
Abstract BACKGROUND Pea ( Pisum sativum ) is a prevalent cool‐season crop that produces seeds valued for their high protein content. Modern cultivars have incorporated several traits improved harvested yield. However, progress toward improving seed quality has received less emphasis, in part due to the lack of tools easily and rapidly measuring traits. In this study we evaluated accuracy single‐seed near‐infrared spectroscopy (NIRS) pea‐seed weight, protein, oil A total 96 diverse pea...
Fusarium root rot caused by solani f. sp. pisi is a major pea disease worldwide. This diagnostic guide characterizes symptoms on plants and signs of the pathogen produced artificial media. Hosts, geographic distribution pathogen, techniques effective in isolating, storing, inoculating with are described. Accepted for publication 8 September 2015. Published 15
In this study, 497 pea accessions from the Pisum core collection located at USDA‐ARS, Western Regional Plant Introduction Station (WRPIS), Pullman, WA and seven woody‐stem lines a private in UK, were screened for resistance to Sclerotinia sclerotiorum , cause of white mould. All genotypes susceptible infection, 237 504 highly since these did not survive 2 weeks post‐inoculation. However, 22 one line identified with quantitative partial Pea 103709, 166084, 169603, 240515 270536 demonstrated...
Abstract Fusarium root rot is a common biotic restraint on pea yields, and genetic resistance the most feasible method for improving production. This study was conducted to discover quantitative trait loci ( QTL ) controlling partial caused by solani (Mart.) Sacc. f.sp. pisi (F.R. Jones) W.C. Snyder & H.N. Hans Fsp ). A RIL population screened in field disease nursery 3 years. Composite interval mapping employed detection using means of severity from three growing seasons. Five were...
Isolates of Rhizoctonia and Rhizoctonia-like spp. (n = 179) were baited selectively from soil plant samples collected irrigated pea crops in the semiarid Columbia Basin Oregon Washington 2011 to 2013, characterized species, subspecies, anastomosis groups (AG) based on sequences internal transcribed spacer region ribosomal DNA. solani comprised 76% all isolates, included isolates AG 4 (31% isolates), 2-1 (18%), 3 (10%), 8 (8%), 5 (5%), 10 (3%), 9 (1%). The Ceratobasidium (20%) four AGs: K...
Due to their nutritional value and function as soil nitrogen fixers, production of pulses has been increasing markedly in the United States, notably dryland areas Northern Plains Pacific Northwest States (NP&PNW). There are several insect-transmitted viruses that prevalent periodically injurious pulse crops NP&PNW elsewhere North America. Others currently minor concern, occurring over limited or sporadically. serious constraints for world not known America, but have potential be introduced...
In June 2006, stunted and chlorotic plants were observed in large patches two 40.5-ha fields of dryland peas (Pisum sativum) Latah County, Idaho, which resulted 90 75% crop loss. the same region, a 121.4-ha field lentils (Lens culinaris) also had showing poor growth, wilting, yellowing patches, 40% Two species lesion nematodes (Pratylenchus neglectus P. thornei) one pin nematode (Paratylenchus hamatus) extracted from rhizosphere soil roots symptomatic these fields. subsequent survey seven...
Six F13 pea (Pisum sativum L.) breeding lines, 00-5001 (Reg. No. GP-108, PI 669372), 00-5003 GP-109, 669373), 00-5004 GP-110, 669374), 00-5005 GP-111, 669375), 00-5006 GP-112, 669376), and 00-5007 GP-113, 669377), were developed by the USDA–ARS, Prosser, WA, via single-seed descent. The lines with traits augmenting yield harvestability combined partial resistance to Fusarium root rot caused solani (Mart.) Sacc. f. sp. pisi (van Hall) Snyd. Hans (Fsp) wilt oxysporum Schlecht. (Fop) races 1,...
Organic vegetable production accounted for 19% of the total organic acreage in Washington State 2013, with 1,700 ha certified pea. However, is challenged constantly threat poor emergence after planting due to damping-off caused by Pythium spp. A survey areas semiarid Columbia Basin central was carried out fall 2009 identify species associated during early spring planting. Of 305 isolates baited from soil sampled 37 fields, 264 were identified 16 sequencing internal transcribed spacer region...
As pesticides have become heavily relied on for management of insect pests vectoring economically important pathogens vegetable crops, development pathogen-resistant germplasm remains a promising alternative to reduce or eliminate costly and timely chemical inputs. Molecular markers can be used rapidly identify resistant genotypes aid breeders in advancing germplasm. This study developed two kompetitive allele-specific PCR (KASP) genotyping rapid screening Pisum sativum resistance Pea...
Sclerotinia sclerotiorum is a necrotrophic fungal pathogen causing white mold on many important economic crops. Recently, some mycoviruses such as S. hypovirulence-associated DNA virus 1 (SsHADV-1) converted into beneficial symbiont that helps plants manage pathogens and other stresses. To explore the potential use of SsHADV-1 biocontrol agent in United States to test efficacy SsHADV-1-infected isolates managing crop diseases, was transferred from Chinese strain DT-8 sclerotiorum. readily...
Field pea is an annual, cool-season legume native to northwest southwest Asia. It was among the first crops cultivated by man. The crop grown primarily in North Dakota, Washington, Montana, Idaho, Oregon, and southern Canada. Ascochyta blight a serious disease affecting above ground portions at all growth stages. Stem, crown, pod, foliar diseases of are caused complex pisi, Mycosphaerella pinodes, Phoma pinodella. This paper reviews pathogens involved. Accepted for publication 28 January...