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- Title
Registration of 'DALSA 1618' St. Augustinegrass.
- Authors
Chandra, Ambika; Genovesi, A. Dennis; Meeks, Meghyn; Segars, Chrissie A.; Eads, Justin; Hejl, Reagan; Floyd, Weston; Wherley, Benjamin; Straw, Chase; Bowling, Rebecca; Kenworthy, Kevin; Schwartz, Brian; Raymer, Paul; Milla‐Lewis, Susana; Wu, Yanqi
- Abstract
'DALSA 1618' (Reg. no. CV‐291, PI 702594) is a first‐generation intraspecific St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] hybrid developed by Texas A&M AgriLife Research in Dallas, TX, from a cross between a drought‐resistant polyploid female parent, TAES 5384 (PI 300130, GRIN National Plant Germplasm System), and a semi‐dwarf shade‐tolerant diploid pollen donor, 'Amerishade'. DALSA 1618 was formerly tested as 'TAES 5896‐09' and 'TXSA‐156'. Superior performance and quality from 2010 to 2015 in space‐plant nurseries across multiple environments led to advancing DALSA 1618 to replicated trials in 10 National Turfgrass Evaluation Program (NTEP) locations across the southcentral and southeastern United States. DALSA 1618 was one of the top performers in the 2016 NTEP (2016–2020). It established faster than 'CitraBlue' and similarly to other tested commercial cultivars. DALSA 1618 exhibited high turfgrass quality in standard and ancillary trials and earlier spring greenup, which was generally better than 'Floratam'. Drought resistance of DALSA 1618 was similar to Floratam (a drought‐resistant aneuploid). Tolerance to moderately dense shade was tested in Dallas, TX, from 2017 to 2020, where DALSA 1618 exhibited improved shade tolerance relative to Floratam. This array of environmental testing indicates DALSA 1618 possesses a unique combination of drought and shade tolerance that would allow its use across the southcentral and southeastern United States. Core Ideas: DALSA 1618 is an embryo‐rescue derived intraspecific hybrid of St. Augustinegrass.DALSA 1618 is tolerant to drought stress and moderately dense shade.DALSA 1618 is suitable for use in USDA plant hardiness zones 7b/8a to 10b.
- Subjects
DALLAS (Tex.); PLANT germplasm; HARDINESS of plants; TEXAS A &; M University. AgriLife Extension Service Division; UNITED States. Dept. of Agriculture; DROUGHT tolerance; DROUGHT management; RECORDING &; registration; QUALITY standards; DROUGHTS
- Publication
Journal of Plant Registrations, 2023, Vol 17, Issue 3, p488
- ISSN
1936-5209
- Publication type
Article
- DOI
10.1002/plr2.20302