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Showing 1 to 8 of 8 for “"germplasm accessions"”.
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Evaluation and Identification of Soybean Aphid Resistance Sources and Mapping of Soybean Aphid Resistance Loci in Early Maturing Soybean Germplasm Accessions
… in early maturing soybeans, 330 soybean germplasm accessions from Maturity Group (MG) I, along with 11 resistant or susceptible checks, were evaluated against soybean aphid in greenhouse by caged (no-choice) and non-caged tests. Germplasm accessions that showed resistance in these tests …
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Phakopsora pachyrhizi growth in tissue of leaves from resistant and susceptible soybean germplasm
… has been observed among resistant soybean germplasm accessions that develop RB lesions. The objective of this study is to compare the reactions of accessions with different resistance symptoms to P. pachyrhizi infection. Ten soybean plant accessions were rated two weeks after inoculated …
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Assessment of farmer preferences, constraints and angro-morphological variation among Bambara groundnut (Vigna subterranea (L.) Verdc.) accessions as a basis for seed yield selection index
… farmers. The first step in preparing such local germplasm for possible pre-breeding is to undertake a needs assessment study to find out what farmers have on their farms and what they would rather have as an improvement. After that, a pre-breeding program with appropriate breeding goals and …
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Characterizing soybean rust resistance within populations of Glycine tomentella and the inheritance and characterization of soybean aphid resistance in PI 587663, PI 587677, PI 587685, and PI 594592
… have been discovered within the USDA soybean germplasm bank, isolates of soybean rust can overcome that resistance, so other sources of rust resistance are needed to combat rust. The wild perennial Glycine species may contain unique rust resistance genes and many of the accessions evaluated to …
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Morphological and molecular identification, pathogenicity characterization of colletotrichum species on soybean, and the resistance of soybean genotypes
… is little information on evaluation of soybean germplasm accessions for anthracnose resistance. Colletotrichum species were isolated from soybean petioles and stems with anthracnose symptoms from soybean fields in several states in the United States. Multi-gene sequence phylogenetic analyses …
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Identifying loci conferring quantitative disease resistance in sorghum and maize against fungal foliar pathogens
… largely elusive. The deployment of resistant germplasm is an economically efficient means to manage disease. However, high selection pressure on pathogens with high evolutionary potential can lead to pathogens overcoming host resistance. Durability of resistance can be maintained through …
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Genetic characterization of a dominant susceptible Rpp1 allele and analysis of quantitative resistance to Asian soybean rust
… line (DS), as well as two Rpp1-harboring soybean accessions PI561356 and PI594760B, revealing three NBS-LRR genes in each resistance line and one (DS-R) in the DS line. Identification of the DS-R gene was verified through virus-induced gene silencing that led to resistance being partially restored …
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Evaluation of drought tolerance in genetically modified Lolium perenne L. and Arabidopsis thaliana
… study also screened different perennial ryegrass accessions from diverse backgrounds to identify germplasm with potential tolerance under drought stress. The results rejected any role of the LpUbl5 gene in drought tolerance of perennial ryegrass and A. thaliana. A potential seed lethal phenotype …