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Authors Schwartz, BM; Contreras, RN; Harris-Shultz, KR; Heckart, DL; Peake, JB; Raymer, PL
Author Full Name Schwartz, Brian M.; Contreras, Ryan N.; Harris-Shultz, Karen R.; Heckart, Douglas L.; Peake, Jason B.; Raymer, Paul L.
Title Discovery and Characterization of a Turf-type Triploid Seashore Paspalum
Source HORTSCIENCE
Language English
Document Type Article
Author Keywords carbol fuchsin; cytology; DAPI; flow cytometry; Paspalum vaginatum; PI; polyploid; turfgrass
Keywords Plus NUCLEAR-DNA CONTENT; GENOME RELATIONS; VAGINATUM
Abstract Seashore paspalum is a salt tolerant, predominately diploid (2n = 2x = 20) species that is well adapted to coastal regions in tropical and subtropical environments. Because a majority of the available cultivars are propagated vegetatively and most genotypes are cross-fertile, a sterile cultivar that does not produce segregating seedlings would benefit sod growers and turfgrass managers who demand uniformity for certification and performance. Therefore, an experiment was conducted to create a colchicine-induced polyploid seashore paspalum. One triploid (2n = 3x = 30) genotype (11-TSP-1) was identified and remains stable. Although there is a possibility that this event was triggered by the colchicine treatment, a more likely explanation is that it resulted from the union of a reduced and an unreduced gamete. Pollen shed was observed from 11-TSP-1 in 2011, but individual pollen grains stained with iodine potassium iodide were irregularly shaped and typically had lower starch content than pollen from several diploid cultivars. The leaf width of 11-TSP-1 was statistically equal to that of the seashore paspalum cultivar SeaStar, indicating its potential for use as a fine turf. 11-TSP-1 had both superior visual color and a dark green color index when compared with 'SeaStar'. Future study of the reproductive fertility and more extensive field testing of this genotype should be carried out to determine its turfgrass potential. Chemical names used: 4', 6-diamidino-2-phenylindole (DAPI), dimethyl sulfoxide (DMSO), iodine-potassium iodide (I-2-KI), propidium iodide (PI).
Author Address [Schwartz, Brian M.] Univ Georgia, Dept Crop & Soil Sci, Tifton, GA 31793 USA; [Contreras, Ryan N.] OR State Univ, Dept Hort, Corvallis, OR 97331 USA; [Harris-Shultz, Karen R.] USDA ARS, Crop Genet & Breeding Res Unit, Tifton, GA 31793 USA; [Heckart, Douglas L.] Univ Georgia, Dept Crop & Soil Sci, Athens, GA 30602 USA; [Peake, Jason B.] Univ Georgia, Dept Agr Leadership Educ & Commun, Tifton, GA 31793 USA; [Raymer, Paul L.] Univ Georgia, Dept Crop & Soil Sci, Griffin, GA 30223 USA
Reprint Address Schwartz, BM (corresponding author), Univ Georgia, Dept Crop & Soil Sci, 2360 Rainwater Rd, Tifton, GA 31793 USA.
E-mail Address tifturf@uga.edu
ORCID Number Harris-Shultz, Karen/0000-0003-1616-4096
Times Cited 3
Total Times Cited Count (WoS, BCI, and CSCD) 3
Publisher AMER SOC HORTICULTURAL SCIENCE
Publisher City ALEXANDRIA
Publisher Address 113 S WEST ST, STE 200, ALEXANDRIA, VA 22314-2851 USA
ISSN 0018-5345
29-Character Source Abbreviation HORTSCIENCE
ISO Source Abbreviation Hortscience
Publication Date DEC
Year Published 2013
Volume 48
Issue 12
Beginning Page 1424
Ending Page 1427
Digital Object Identifier (DOI) 10.21273/HORTSCI.48.12.1424
Page Count 4
Web of Science Category Horticulture
Subject Category Agriculture
Document Delivery Number 280DR
Unique Article Identifier WOS:000329009400001
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