Full TGIF Record # 333416
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Web URL(s):https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/148673
    Last checked: 12/01/2023
Publication Type:
Content Type:Abstract or Summary only
Author(s):Wu, Shidi; Grimshaw, Austin Lee; Bushman, B. Shaun; Robbins, Matthew D.; Vaiciunas, Jennifer; Honig, Josh A.; Tkach, Christopher; Bonos, Stacy A.
Author Affiliation:Wu: Presenting Author and Rutgers University, New Burnswick, NJ; Tkach and Bonos: Rutgers University, New Brunswick, NJ; Grimshaw and Vaiciunas: Plant Biology, Rutgers University, New Brunswick, NJ; Bushman: USDA-ARS, Logan, UT; Robbins: Forage and Range Research Lab, USDA ARS, Logan, UT; Honig: Plant Biology and Pathology, Rutgers University, New Brunswick, NJ
Title:Genetic mapping of summer patch resistance in hard fescue
Section:Turfgrass breeding, genetics, molecular biology, microbiome oral I (includes student competition)
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C05 turfgrass science
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Meeting Info.:St. Louis, Missouri: October 29-November 1, 2023
Source:ASA, CSSA, SSSA International Annual Meeting. 2023, p. 148673.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Hard fescue (Festuca brevipila Tracey) is a cool-season turfgrass known for exceptional performance under low-maintenance conditions but is damaged by summer patch disease. Summer patch is a root disease caused by Magnaporthiopsis poae and Magnaporthiopsis meyeri-festucae. The objectives of this study were to create a mapping population, construct a genetic linkage map, and identify Quantitative Trait Loci (QTL) for summer patch resistance in hard fescue. The parental clones R10 (resistant) and S5 (susceptible) were selected in a preliminary study based on the extreme phenotypic performance toward summer patch resistance. Full-sib progeny populations were constructed by crossing R10 ([Female Symbol]) x S5 ([Male symbol]) and S5 ([Female symbol]) x R10 ([Male symbol]). Ninety-one progeny for population R10 x S5 and 87 progeny for population S5 x R10 (178 progeny total) were established in three identical mowed spaced-plant trials. The populations were arranged in a randomized complete block design with four replications. A mixture of an M. meyeri-festucae isolate (SCR9) and an M. poae isolate (C11) served as inoculum for the trials. The disease severity of hard fescue clones were assessed by visual rating on a scale of 1 to 10 during the summers of 2018 through 2021. Next Generation Sequencing was performed, and the sequence data were demultiplexed by Stacks with a reference genome to find SNPs. We obtained 6577 SNPs and 7230 SNPs shared by 90% of samples for R10 x S5 and S5 x R10 populations, respectively. A linkage map with 21 linkage groups was constructed using 1273 SNPs, covering 1593 cM in total. Eight QTLs were identified in four regions on three linkage groups. This is the first report of QTL mapping of summer patch resistance in hard fescue and will help the development of hard fescue cultivars with improved resistance to summer patch in a more efficient method."
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wu, S., A. L. Grimshaw, B. S. Bushman, M. D. Robbins, J. Vaiciunas, J. A. Honig, et al. 2023. Genetic mapping of summer patch resistance in hard fescue. Agron. Abr. p. 148673.
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    Last checked: 12/01/2023
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