Full TGIF Record # 324862
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Web URL(s):https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/142461
    Last checked: 01/24/2023
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Houting, Kirtus P.; Kerns, James P.; Miller, Grady L.; Schwartz, Brian M.; Patton, Aaron J.; Milla-Lewis, Susana R.
Author Affiliation:Houting: Presenting Author and North Carolina State University; Kerns, Miller, and Milla-Lewis: North Carolina State University; Schwartz: University of Georgia-Tifton; Patton: Purdue University
Title:Gaining insights into the polygenic inheritance of large patch resistance in zoysiagrass
Section:Molecular Techniques, Genetics, Microbiome, and Turfgrass Breeding Oral (includes student competition)
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C05 turfgrass science
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Meeting Info.:Baltimore, Maryland: November 6-9, 2022
Source:ASA, CSSA, SSSA International Annual Meeting. 2022, p. 142461.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Zoysiagrass (Zoysia spp.) is considered to be a lower input warm season turfgrass that is well adapted to the southern and transitional growing regions of the U.S. and around the world. While zoysiagrass is more tolerant of most stresses as compared to other warm season turfgrasses, one of the major problems facing zoysiagrass is the foliar disease large patch (LP). Large patch is caused by Rhizoctonia solani AG 2-2LP, and once infected by the fungus, large areas of zoysiagrass can be affected, leaving behind large areas of thin and necrotic turf. Currently fungicides are the only practical method for disease control. Development of resistant cultivars would represent a more sustainable approach. However, there is limited understanding of the genetic control of resistance. For this purpose, a mapping population developed from the cross of LP susceptible Meyer (Z. japonica) and LP resistant PI231146 (Z. matrella) was used to construct a high-density linkage map of single nucleotide polymorphism (SNP) markers. Phenotypic evaluations were done by inoculating the population with rye grains infected with R. solani under controlled environmental conditions. Disease response was evaluated for 24 days by taking the percentage of necrotic or water soaked leaves within each pot every three days and deriving the area under the disease progression curve (AUDPC). Preliminary results indicate resistance is most likely governed by quantitative inheritance with multiple significant genomic regions associated with the resistance identified. Markers found to be linked with these regions can be used in selection of superior zoysiagrass genotypes with resistance to large patch without having to rely solely on disease pressure in the field."
See Also:See also related abstract in ASA, CSSA and SSSA International Annual Meetings, 2021, p. 134408, R=317149. R=317149
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Houting, K. P., J. P. Kerns, G. L. Miller, B. M. Schwartz, A. J. Patton, and S. R. Milla-Lewis. 2022. Gaining insights into the polygenic inheritance of large patch resistance in zoysiagrass. Agron. Abr. p. 142461.
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