Details for: PI 699961, Lolium multiflorum Lam., 'FL4XR16'


Summary Data
Taxonomy:
Lolium multiflorum Lam.
Cultivar:
'FL4XR16'
Origin:
Developed – Florida, United States
Received by NPGS:
17 Mar 2022
Improvement Status:
Cultivar
Form Received:
Seed
Life Form:
Annual and/or Perennial
Life Cycle:
Annual and Perennial
Availability
This accession is not available. Contact site for status.
 
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Core Passport Data
Taxonomy:
Lolium multiflorum Lam.
Cultivar:
'FL4XR16'
Origin:
Developed – Florida, United States
Received by NPGS:
17 Mar 2022
Improvement Status:
Cultivar
Form Received:
Seed
Life Form:
Annual and/or Perennial
Life Cycle:
Annual and Perennial
Source History
Developed

Florida, United States

Developer(s):
Accession Names and Identifiers
'FL4XR16'
Type: Cultivar name

Narrative
‘FL4XR16’ tetraploid forage-type annual ryegrass is a synthetic cultivar selected for mid-late maturity, high dry matter (DM) yield and resistance to gray leaf spot (GLS). In the spring of 2016, a nursery of FLRED4X experienced a high incidence of GLS and 50 highly disease resistant individual plants were replanted and intercrossed. Seed from this intercross were used to establish a half-sib nursery in fall 2016. The nursery was subsequently rogued for uniform maturity and the remaining plants were allowed to intercross to produce the base population FL4XR16 in spring 2017. The base population went through one additional cycle of selection for uniformity. Seed harvested from this final selection cycle or a later isolated increase of this population was used to establish DM yield experiments at Citra, FL and Tifton, GA in 2018-19; at Hague, FL, and Tifton, GA in 2019-20; and at Hague FL 2020-21 for a total of five location-years. FL4XR16 was not significantly different in DM yield from the top entry in a given test in four of these five experiments. Maturity ratings at Gainesville show that FL4XR16 was mid-late in maturity. The locations of evaluation for this cultivar have primarily been in the Coastal Plains Region of the US, but considering its pedigree, it is expected to perform well across the southern US annual ryegrass growing region.
Lolium multiflorum Lam.
Genus:
Lolium
Family:
Poaceae (alt. Gramineae)
Subfamily:
Pooideae
Tribe:
Poeae
Subtribe:
Loliinae
Nomen number:

22493
Place of publication:

Fl. franç. 3:621. 1779 ("1778")
Verified:
05/08/1992 by ARS Systematic Botanists.
Other conspecific taxa
Autonyms (not in current use), synonyms and invalid designations
Autonym(s)
Lolium multiflorum Lam. var. multiflorum

Homotypic Synonym(s)
Lolium perenne L. subsp. multiflorum (Lam.) Husn., nom. inval.

Heterotypic Synonym(s)
Lolium gaudinii Parl., nom. inval.
Lolium italicum A. Braun, nom. inval.
Lolium multiflorum Lam. var. westerwoldicum Wittm.

Common names
LanguageNameAlternate namenoteseqCitation
Englishannual ryegrass  1Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
EnglishItalian ryegrass  1Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
Englishlovitto ryegrass  1Integrated Botanical Information System (IBIS). Australian plant common name database (on-line resource).
EnglishWesterwold ryegrass  1Terrell, E. E. 1968. A taxonomic revision of the genus Lolium. Techn. Bull. U.S.D.A. 1392:10.
EnglishWesterwolds ryegrass  1Integrated Botanical Information System (IBIS). Australian plant common name database (on-line resource).
AfrikaansItaliaanse raaigras  2Henderson, L. 2001. Alien weeds and invasive plants: a complete guide to declared weeds and invaders in South Africa. Plant Protection Research Institute, Handbook 12
English (Canada)Italian rye grass Agriculture & Agri-Food Canada official name2Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 30.
Frenchivraie multiflore  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Frenchray-grass d'Italie  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
French (Canada)ivraie multiflore Agriculture & Agroalimentaire Canada nom officiel2Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 30.
Germanitalienisches Raygras  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Germanwelsches Weidelgras  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Germanwesterwoldisches Weidelgras  2Terrell, E. E. 1968. A taxonomic revision of the genus Lolium. Techn. Bull. U.S.D.A. 1392:10.
Italianloglio italico  2International Seed Testing Association. 1982. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2.
Portugueseazevém  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Spanishballico italiano  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Spanishraygrás italiano  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Swedishitalienskt rajgräs  2Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Chineseduo hua hei mai cao  2Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
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Citations
Pedigree
Description:
FL4XR16 was selected out of FLRED4X during the 2015-16 season under excessively high GLS disease pressure. Fifty GLS disease resistant plants were selected from FLRED4X and intercrossed in isolation. In the 2016-17 season a 0.1 ha planting was rogued for uniformity of growth, maturity and disease response. The resulting population went through one additional year of mass selection with less than 10% rogueing of plants resulting in a uniform and highly disease resistant tetraploid population.
Intellectual Property Rights
Journal of Plant Registration. CV-289, OTHER GRASSES. Issued: 01 Sep 2022.
  • Kenworthy, K. E., P. Reith, K. H. Quesenberry, E. Rios, & A. Blount. 2022. Release of FL4XR16 Tetraploid Annual Ryegrass. J. Pl. Registr. 16(3):517. DOI: 10.1002/plr2.20223.