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| Web URL(s): | https://scisoc.confex.com/crops/2017am/webprogram/Paper107777.html
Last checked: 10/23/2017 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Rios, Esteban F.;
Rucker, Alexandra M.;
Dubeux, Jose Carlos Batista Jr.;
Saha, Malay C.;
Schneider-Canny, Raquel;
Castillo, Miguel S.;
Milla-Lewis, Susana R.;
Anderson, William F.;
Schwartz, Brian M.;
Inosroza, Luis;
Munoz, Patricio R. |
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| Author Affiliation: | Rios: Agronomy, University of Florida, Gainesville, FL; Rucker and Munoz: Agronomy Department, University of Florida, Gainesville, FL; Dubeux: North Florida Research and Education Center, University of Florida, Marianna, FL; Saha: Noble Research Institute, LLC, Ardmore, OK; Schneider-Canny: Noble Research Institute, Ardmore, OK; Castillo: Crop and Soil Sciences, North Carolina State University, Raleigh, NC; Milla-Lewis: Crop Science, North Carolina State University, Raleigh, NC; Anderson: Crop Genetics and Breeding Research Unit, USDA-ARS, Tifton, GA; Schwartz: Department of Crop and Soil Sciences, University of Georgia - Tifton, Tifton, GA; Inosroza: Instituto de Investigaciones Agropecuarias, Chillan, Chile |
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| Title: | Genotype by environment interaction in Cynodon germplasm for biomass yield across the southeastern USA |
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| Section: | C06 forage and grazinglands
Other records with the "C06 forage and grazinglands" Section
Forages in the intermediate south and southern plains poster
Other records with the "Forages in the intermediate south and southern plains poster" Section
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| Meeting Info.: | Tampa, Florida: October 22-25, 2017 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2017, p. 107777. |
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| Publishing Information: | [Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Biomass; Cultivar evaluation; Cynodon; Genetic analysis; Genotypes
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| Cultivar Names: | Tifton 85; Coastal; Jiggs; Florida 44 |
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| Geographic Terms: | Southeastern United States |
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| Abstract/Contents: | "Bermudagrass (Cynodon spp. L.) is the most important warm-season perennial grass grown for forage and turf in the Southeastern USA. Plant introductions (PIs) are valuable genetic resources for cultivar development. A world collection of Cynodon species is available at the National Plant Germplasm System (NPGS). The objective of this study was to calculate genetic parameters in a set of 287 bermudagrass genotypes for biomass yield across five locations across the southeastern USA (Citra and Marianna, FL; Tifton, GA; Ardmore, OK; and Jackson Springs, NC) and multiple harvests/years. The population was composed of: i) 146 PIs from the bermudagrass core collection maintained at Tifton, GA; ii) 137 PIs from the NPGS maintained at Griffin, GA; and iii) commercial cultivars ('Tifton 85', 'Coastal', 'Jiggs', and 'Florida 44'). The experiment was designed as a row-column with two replicates and augmented representation of the cultivars. Experimental units were established in the summer 2014 (summer 2015 in Ardmore). Dry biomass yield (kg/ha) was assessed in each location starting the year after establishment, and multiple harvests were performed in each site: 2 (Ardmore, Jackson Springs, and Marianna), 8 (Tifton) and 11 (Citra). Linear mixed models with repeated measures (harvests) were implemented in ASReml to estimate variance components and calculate genetic parameters. Broad sense heritability (H2) for forage yield ranged from 0.08 to 0.54 for analyses performed by location, while H2=0.09 for the multi-location model. Genotype by environment correlation (rB) ranged from 0.73 to 0.91 for analyses by location, indicating stable genotypic performance for forage yield across harvests within locations; while the low correlation (rB=0.26) for the multi-location model shows that genotypes performed differently across locations. Our results exhibit the importance of breeding bermudagrass varieties adapted to specific sites across the southeastern USA." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"1011" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rios, E. F., A. M. Rucker, J. C. B. Jr. Dubeux, M. C. Saha, R. Schneider-Canny, M. S. Castillo, et al. 2017. Genotype by environment interaction in Cynodon germplasm for biomass yield across the southeastern USA. Agron. Abr. p. 107777. |
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Last checked: 10/23/2017 |
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