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Authors Jensen, KB; Pearse, G; Larson, SR; Robins, JG
Author Full Name Jensen, Kevin B.; Pearse, Gordon; Larson, Steve R.; Robins, Joseph G.
Title 'AlkarXL', a new tall wheatgrass cultivar for use on saline semiarid lands
Source JOURNAL OF PLANT REGISTRATIONS
Language English
Document Type Article
Abstract The USDA announces the release of cultivar 'AlkarXL' (Reg. no. CV-286, PI 691611) tall wheatgrass [Thinopyrum ponticum (Podp.) Barkworth & D. R. Dewey] for use on semiarid rangelands and irrigated pastures that receive a minimum of 350 mm of average annual precipitation on alkali soils. AlkarXL is a 10-clone synthetic that originated from 56 plant introductions from the National Plant Germplasm System plus the cultivar Alkar. AlkarXL has undergone phenotypic recurrent selection for visual plant vigor (first cycle), seed yield (first cycle), dry-matter yield (DMY) (second cycle), and crude protein (second cycle). The 10 genotypes traced to PI 255146 (two genotypes; 30%, Turkey), PI 308592 (10%, Italy), PI 442631 (10%, Turkey), PI 109542 (10%, Turkey), PI 255443 (10%, llirkey), PI 383545 (10%, Turkey), PI 401006 (Turkey), PI 401009 (10%, Turkey), and W6 21870 (10%, Ukraine). Morphologically, AlkarXL has significantly wider lemmas and glumes and shorter glumes than cultivars Alkar, Greenstar, Jose, Largo, and Szarvasi-1. AlkarXL had narrower flag leaves than Largo. AlkarXL had more seedlings (P < .05) emerge than Alkar at Lages Junction, NV. AlkarXL had greater (P < .05) plant persistence (plant frequency) 3 (2017), 4 (2018), and 5 (2019) yr after seeding at Lages Junction than did Alkar. Dry-matter yield was less descriptive due to large variations in DMY among replications. AlkarXL had significantly (P < .10) more total DMY than Greenstar and Largo at Millville, UT, and similar DMY as Greenstar, Jose, and Savarsi-1 at Panguitch, UT.
Author Address [Jensen, Kevin B.; Larson, Steve R.; Robins, Joseph G.] USDA ARS, Forage & Range Res Lab, 695 North 1100 East, Logan, UT 84322 USA; [Pearse, Gordon] Bruce Seed, Townsend, MT 59644 USA
Reprint Address Jensen, KB (corresponding author), USDA ARS, Forage & Range Res Lab, 695 North 1100 East, Logan, UT 84322 USA.
E-mail Address kevin.jensen@ars.usda.gov
ORCID Number Larson, Steve/0000-0003-2742-2134
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher WILEY
Publisher City HOBOKEN
Publisher Address 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
ISSN 1936-5209
29-Character Source Abbreviation J PLANT REGIST
ISO Source Abbreviation J. Plant Regist.
Publication Date SEP
Year Published 2020
Volume 14
Issue 3
Beginning Page 298
Ending Page 305
Digital Object Identifier (DOI) 10.1002/plr2.20045
Page Count 8
Web of Science Category Agronomy; Plant Sciences
Subject Category Agriculture; Plant Sciences
Document Delivery Number QE5ZA
Unique Article Identifier WOS:000616284400009
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