Full TGIF Record # 227351
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=105
    Last checked: 08/12/2013
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Publication Type:
i
Report
Author(s):Hoyle, J. A.; Straw, C. M.; Henry, G. M.
Author Affiliation:University of Georgia, Athens, GA
Title:Morphological differences among bahiagrass hybrids collected√Ę in Georgia
Section:Posters
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Meeting Info.:Houston, Texas: January 28-30, 2013
Source:Proceedings of the Southern Weed Science Society: 66th Annual Meeting. Vol. 66, 2013, p. 18.
# of Pages:1
Publishing Information:Champaign, Illinois: Southern Weed Science Society
Keywords:TIC Keywords: Ecological distribution; Evaluations; Hybrids; Morphological evaluation; Paspalum notatum
Abstract/Contents:"Bahiagrass (Paspalum notatum) is a warm-season perennial grass that was introduced into the United States from South America. Bahiagrass has long been used in pastures, forages, and roadsides, but its ability to grow and reproduce in a wide range of environments has contributed to its success and spread as a weed. Differences have been observed in bahiagrass seedhead morphology over the past decade. Furthermore, hybridization has been observed between several Paspalum spp. The existence and spread of bahiagrass hybrids may reduce herbicidal control and enhance infestation in turfgrass environments. Therefore, the objective of this research was to identify possible bahiagrass hybrids, describe their distribution throughout the state, and determine their morphological differences. Bahiagrass biotypes were collected from 12 counties throughout the state of Georgia between 3 July 2012 and 20 July 2012. Approximately, 12 to 15 bahiagrass biotypes were obtained from 3 to 4 locations within each county. Seedhead branch number was used to identify possible bahiagrass hybrid biotypes. Biotypes with seedhead branch numbers ranging from 2 to 8 were collected. Latitude and longitude were obtained along with elevation characteristics for each collection site. Each biotype was excavated from the site and transplanted into 1 liter pots containing native soil and placed in the Crop and Soil Sciences greenhouse complex in Athens, GA. Greenhouse temperatures are maintained at 32/26 C (day/night). Each bahiagrass biotype was destructively harvested and approximately 20-30 rhizome cuttings, 2.5 cm in length, were replanted into 1 liter pots containing a 1:1:1 (peat:native soil:sand) media. Transplanted bahiagrass biotypes were grown to maturity in the greenhouse. Morphological data were collected from regenerated bahiagrass biotypes (n = 1002) between 11 November 2012 and 9 December 2012. Collected data included leaf width at leaf base (mm), leaf width midway to leaf apex (mm), leaf length (cm), ligule description (membranous, hairy, or absent), ligule length (mm), seedhead branch number, seedhead length (cm), and flowering culm length (cm). Bahiagrass biotypes ranging in seedhead branch number from 2 to 8 were collected throughout the state of Georgia. Biotypes with 2, 3, and 4 seedhead branches were collected from all 12 counties. Bahiagrass biotypes with 5 seedhead branches were collected in 9 of 12 counties, while biotypes with 6, 7, and 8 branches were collected from 6, 3, and 1 counties, respectively. The frequency of the presence of 3- to 8-branched seedhead bahiagrass biotypes were visually correlated with the close proximity of dallisgrass (Paspalum dilatatum) and/or vaseygrass (Paspalum urvillei). Both membranous- and hairy-ligules were observed on all bahiagrass biotypes regardless of location or original seedhead number. Differences were observed between original seedhead number and leaf width and leaf length. Identified Paspalum genetic markers will be used to determine genetic differences between collected biotypes."
Language:English
References:0
Note:This item is an abstract only!
Geographic Terms:Georgia
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hoyle, J. A., C. M. Straw, and G. M. Henry. 2013. Morphological differences among bahiagrass hybrids collected√Ę in Georgia. South. Weed Sci. Soc. Proc. 66:p. 18.
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http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=105
    Last checked: 08/12/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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