Full TGIF Record # 324875
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Web URL(s):https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/143455
    Last checked: 01/24/2023
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Carbajal Melgar, Esdras Manuel; Van Der Laat, Rocio; Miller, Grady L.; Dunne, Jeffrey C.; Schwartz, Brian M.; Milla-Lewis, Susana R.
Author Affiliation:Carbajal Melgar: Presenting Author and North Carolina State University; Van Der Laat, Miller, Dunne, and Milla-Lewis: North Carolina State University; Schwartz: University of Georgia-Tifton
Title:Evaluation of shade tolerance and genetic diversity in South African bermudagrass accessions
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. 143455.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Common bermudagrass ((Cynodon dactylon) L. Pers.) is a warm-season turfgrass species widely grown in the southern United States for its superior wear tolerance and rapid establishment. Shade tolerance has become one of the major limitations for this species, especially in home lawns and landscapes where partially shaded areas are very common. The identification of new sources of genetic tolerance to shade would aid in development of improved bermudagrass cultivars with improved performance for this trait. In spring 2019, 24 bermudagrass accessions newly collected from South Africa were evaluated for their ability to persist under shade. Entries were established in a randomized complete block design with three replications at the Lake Wheeler Turfgrass Field Lab (Raleigh, NC) and evaluated for turfgrass quality, turfgrass density, genetic color, percent ground cover, turfgrass regrowth and the normalized difference vegetation index (NDVI) under 63% shade. The turfgrass performance index (TPI) identified three lines with the best performance. Additionally, as these accessions represent new germplasm, understanding levels of genetic diversity as well as ploidy levels in these materials is key to their use in cultivar development. Simple Sequence Repeat (SSR) primers were used to evaluate allelic diversity among the South African bermudagrass accessions, especially in comparison to economically important commercial cultivars. Both an unweighted pair group method with arithmetic averaging (UPGMA) phylogram and principal coordinate analysis (PCO) analysis revealed unique genetic variation present within these new materials. Furthermore, flow cytometry identified all accessions as polyploids. Accessions with superior shade tolerance and unique allelic diversity identified in this study represent novel germplasm that can be used in future breeding efforts to improve shade tolerance in bermudagrass."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Carbajal Melgar, E. M., R. Van der Laat, G. L. Miller, J. C. Dunne, B. M. Schwartz, and S. R. Milla-Lewis. 2022. Evaluation of shade tolerance and genetic diversity in South African bermudagrass accessions. Agron. Abr. p. 143455.
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