Full TGIF Record # 309591
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/118823
    Last checked: 12/05/2019
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Content Type:Abstract or Summary only
Author(s):Brown, Jessica; Yu, Xingwang; Tuong, Tan D.; Schwartz, Brian M.; Patton, Aaron J.; Arellano, Consuelo; Livingston, David; Milla-Lewis, Susana R.
Author Affiliation:Brown: North Carolina State University, Raleigh, NC; Yu and Milla-Lewis: Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC; Tuong: U.S. Department of Agriculture, Raleigh, NC; Schwartz: Department of Crop and Soil Sciences, University of Georgia-Tifton, Tifton, GA; Patton: Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN; Arellano: Statistics, North Carolina State University, Raleigh, NC; Livingston: Crop Science, USDA-ARS, North Carolina State University, Raleigh, NC
Title:Identification and validation of freeze tolerance and cold acclimation associated QTL in zoysiagrass
Section:C05 turfgrass science
Other records with the "C05 turfgrass science" Section

Molecular techniques, genetics and plant breeding oral (includes student competition)
Other records with the "Molecular techniques, genetics and plant breeding oral (includes student competition)" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 118823.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Keywords:TIC Keywords: Cold acclimation; Cold resistance; Gene mapping; Genetic markers; Quantitative trait loci; Single nucleotide polymorphism; Zoysia japonica
Cultivar Names:Victoria; Meyer
Abstract/Contents:"Zoysiagrasses (Zoysia spp.) have risen in popularity in the United States since their introduction due to their reputation as a low input warm season turf. This primarily vegetatively propagated turf is well suited to the southeastern U.S. as a result of its wide general tolerances to drought, shade, and salinity. However, little progress has been made in advancing the winter hardiness of zoysia since the introduction of Meyer in the 1950's, a factor that prevents further spread of the species north of the transition zone. The development of increased tolerance to extreme temperatures has become more relevant over the years, and breeding efforts stand to benefit considerably from a greater knowledge base behind the physiology of winter hardiness and freeze tolerance. The goal of this study was to elucidate the genetic control of freeze tolerance in zoysiagrass in order to facilitate selection of more freeze tolerant materials. A SNP-based high-density linkage map of Z. japonica was generated using a 175 pseudo-F2 mapping population of Meyer, the most freeze tolerant zoysiagrass cultivar x 'Victoria', a freeze susceptible cultivar with desirable turf quality. A randomized complete block design of the mapping population was implemented for cold acclimated and non-acclimated treatments, each under two sub-zero temperature treatments (-8, -11) based off the LT50 of the parent cultivars. Data was collected on regrowth and surviving green tissue for six weeks following freezing on a visual scale of 0-5. Seventy-eight putative QTL associated with cold acclimation and freezing tolerance were identified. Overlap between these results and previously identified winter survival QTL would strengthen associations between those regions and freezing tolerance. Markers showing the strongest associations with these regions could be implemented in a marker assisted selection program to transfer freeze tolerance into germplasm of interest with the ultimate goal of creating elite zoysiagrass cultivars."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brown, J., X. Yu, T. D. Tuong, B. M. Schwartz, A. J. Patton, C. Arellano, et al. 2019. Identification and validation of freeze tolerance and cold acclimation associated QTL in zoysiagrass. Agron. Abr. p. 118823.
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