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Identification Of Quantitative Trait Loci For Seed Traits And Floral Morphology In A Field-Grown Lolium Perenne • Lolium Multiflorum Mapping Population, R. N. Brown, R. E. Barker, S. E, Warnke, L. D. Cooper, L. A. Brilman, M. A. Rouf Mian, Geunhwa Jung, S. C. Sim
Identification Of Quantitative Trait Loci For Seed Traits And Floral Morphology In A Field-Grown Lolium Perenne • Lolium Multiflorum Mapping Population, R. N. Brown, R. E. Barker, S. E, Warnke, L. D. Cooper, L. A. Brilman, M. A. Rouf Mian, Geunhwa Jung, S. C. Sim
Geunhwa Jung
Lolium perenne L. (perennial ryegrass), and Lolium multiflorum Lam. (annual or Italian ryegrass), differ in several traits related to seed yield. Generally, L. multiflorum spikes are larger than L. perenne spikes, and have more spikelets, more florets per spikelet, larger seeds and awns. The greater number of spikelets and florets and larger seeds are associated with higher seed yield in L. multiflorum. Ryegrass (Lolium sp.) cultivars are produced by seed multiplication and understanding the genetics of seed production traits would aid in plant improvement. A total of 30 QTL for seed production related traits were identified in this study. The …
Comparative Analysis Of Multiple Disease Resistance In Ryegrass And Cereal Crops, Young-Ki Jo, Reed Barker, William Pfender, Scott Warnke, Sung-Chur Sim, Geunhwa Jung
Comparative Analysis Of Multiple Disease Resistance In Ryegrass And Cereal Crops, Young-Ki Jo, Reed Barker, William Pfender, Scott Warnke, Sung-Chur Sim, Geunhwa Jung
Geunhwa Jung
Ryegrass (Lolium spp.) is among the most important forage crops in Europe and Australia and is also a popular turfgrass in North America. Previous genetic analysis based on a three-generation interspecific (L. perenne 9 L. multiflorum) ryegrass population identified four quantitative trait loci (QTLs) for resistance to gray leaf spot (Magneporthe grisea) and four QTLs for resistance to crown rust (Puccinia coronata). The current analysis based on the same mapping population detected seven QTLs for resistance to leaf spot (Bipolaris sorokiniana) and one QTL for resistance to stem rust (Puccinia graminis) in ryegrass for the first time. Three QTLs for …
Analysis Of Est Sequences Suggests Recent Origin Of Allotetraploid Colonial And Creeping Bentgrasses, David Rotter, Arvind K. Bharti, Huaijun Michael Li, Chongyuan Luo, Stacy A. Bonos, Suleiman Bughrara, Geunhwa Jung, Joachim Messing, William A. Meyer, Stephen Rudd, Scott E. Warnke, Faith C. Belanger
Analysis Of Est Sequences Suggests Recent Origin Of Allotetraploid Colonial And Creeping Bentgrasses, David Rotter, Arvind K. Bharti, Huaijun Michael Li, Chongyuan Luo, Stacy A. Bonos, Suleiman Bughrara, Geunhwa Jung, Joachim Messing, William A. Meyer, Stephen Rudd, Scott E. Warnke, Faith C. Belanger
Geunhwa Jung
Advances in plant genomics have permitted the analysis of several members of the grass family, including the major domesticated species, and provided new insights into the evolution of the major crops on earth. Two members, colonial bentgrass (Agrostis capillaris L.) and creeping bentgrass (A. stolonifera L.) have only recently been domesticated and provide an interesting case of polyploidy and comparison to crops that have undergone human selection for thousands of years. As an initial step of characterizing these genomes, we have sampled roughly 10% of their gene content, thereby also serving as a starting point for the construction of their …
Mapping Qtl For Dollar Spot Resistance In Creeping Bentgrass (Agrostis Stolonifera L.), N. Chakraborty, J. Curley, S. Warnke, M. D. Casler, Geunhwa Jung
Mapping Qtl For Dollar Spot Resistance In Creeping Bentgrass (Agrostis Stolonifera L.), N. Chakraborty, J. Curley, S. Warnke, M. D. Casler, Geunhwa Jung
Geunhwa Jung
Dollar spot caused by Sclerotinia homoeocarpa F. T. Bennett is the most economically important turf disease on golf courses in North America. Dollar spot resistance in a creeping bentgrass cultivar would greatly reduce the frequency, costs, and environmental impacts of fungicide application. Little work has been done to understand the genetics of resistance to dollar spot in creeping bentgrass. Therefore, QTL analysis was used to determine the location, number and eVects of genomic regions associated with dollar spot resistance in the Weld. To meet this objective, Weld inoculations using a single isolate were performed over 2 years and multiple locations …