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| Web URL(s): | https://scisoc.confex.com/crops/2015am/webprogram/Paper93126.html
Last checked: 11/23/2015 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Milla-Lewis, Susana R.;
Carbajal, Esdras Manuel;
Zuleta, Maria Carolina;
Schwartz, Brian M.;
Chavarro, Carolina;
Ballen-Taborda, Carolina |
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| Author Affiliation: | Milla-Lewis, Carbajal, and Zuleta: Crop Science, North Carolina State University, Raleigh, NC; Schwartz: Department of Crop and Soil Sciences, University of Georgia - Tifton, Tifton; Chavarro and Ballen-Taborda: Center for Applied Genetic Technologies (CAGT), University of Georgia, Athens, GA |
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| Title: | Development of colchicine-induced tatraploid St. Augustinegrass |
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| Section: | C05 turfgrass science
Other records with the "C05 turfgrass science" Section
Turfgrass science: II
Other records with the "Turfgrass science: II" Section
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| Meeting Info.: | Minneapolis, Minnesota: November 15-18, 2015 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2015, p. 93126. |
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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: Chromosome number; Colchicine; Cultivar evaluation; Genotypes; Polyploidy; Stenotaphrum secundatum; Water use efficiency
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| Cultivar Names: | Raleigh |
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| Abstract/Contents: | "The base chromosome number of Stenotaphrum secundatum (Walt.) Kuntze, is x=9, with diploids (2n=2x=18), triploids (2n=3x=27), and tetraploids (2n=4x=36) reported. Polyploid lines of St. Augustinegrass have been found to be more resistant than diploids against several biotic stresses including chinch bugs and sting nematodes. Polyploids were also reported to exhibit increased water-use efficiency as compared to diploids. The exploitation of the variation found among polyploids has been hindered due to sterility issues related to unbalanced chromosome compliments, however. The present study was conducted to develop tetraploid St. Augustinegrass lines of cultivar 'Raleigh' in order to investigate if they can be more readily crossed with polyploid genoytpes of interest. Seeds of Raleigh were treated with four colchicine treatments. Seedlings recovered after treatment were screened for genome size changes using flow cytometry. A set of putative tetraploids was identified and corroborated through chromosome counts. Further evaluation of these lines for fertility levels is needed before evaluating their potential for crosses." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related thesis, Breeding for Improved St. Augustinegrass Through Ploidy Manipulation and Identification of Gray Leaf Spot-Resistant Germplasm, 2017, R=287876. R=287876 |
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| Note: | This item is an abstract only!
"418-29"
"Poster Number 813" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Milla-Lewis, S. R., E. M. Carbajal, M. C. Zuleta, B. M. Schwartz, C. Chavarro, and C. Ballen-Taborda. 2015. Development of colchicine-induced tatraploid St. Augustinegrass. Agron. Abr. p. 93126. |
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Last checked: 11/23/2015 |
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