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Tamtbo

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Lolium multiflorum Lam. Italian ryegrass · Agricultural · bred by Texas AgriLife Research

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Variety description

10 August 2026

The variety is tetraploid (4n = 28 chromosomes) and was obtained through selection from populations selected in Texas. The plant is distinguished by high stature, developed tillering, and broad leaves. The variety is characterized by an early or medium maturity group.

The plant is adapted to various soil types, including loams and sandy loams, and is capable of withstanding short-term flooding. It possesses resistance to crown rust and frost. It ensures consistently high dry matter yield with good nutritional indicators.

The variety is used as a forage crop for livestock grazing, haymaking, and silage production. It is effective for overseeding into existing pastures to provide a forage base during winter and early spring periods, and it is also used as part of forage mixtures.

Sources4
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Countries of admission

2 jurisdictions

Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.

QM

active no record

Variety registered as early as 3 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.

Variety in registries Regions of admission, rights holders, and status of plant breeders' rights

Parties

Breeder
Texas AgriLife Research 15 Developed the variety
Applicant
Texas AgriLife Research 15 Submitted the application to the register
Rights holder
Oregro Seeds 52 Holds the rights to the variety
Maintainer
Oregro Seeds 52 Responsible for variety maintenance

Admission to trade

The variety is listed in the national registry — its seeds are authorized for sale in this country.

  • UY Uruguay Application submitted

    № 30202110240047

  • IT Italy Active

    № 013686_A 013686

    Application
    23 June 2010
    Registration
    20 March 2013
  • AR Argentina Active

    № 013132

    Application
    9 March 2011
    Registration
    14 July 2011
  • UY Uruguay Application submitted

    № 2019047

    Application
    5 April 2019

Plant breeders' rights

The right is granted for a limited term: propagation of the variety requires a license from the rights holder.

United States of America № 200900311
Active
  1. Application filed 12 May 2009
  2. Registered 30 July 2013
  3. Currently active indefinite in the register

Records are sourced from official registry publications. Data sources and legal status

Found an error in the record?

The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.

This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources

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Nearby in the species list Supreme Q, Surrey, SURREY II, Surrey Nova, Sustainer, Suxyl, Swale, Syntilla, Tachimasari, Talero, Tarandus, Tasador, Tauro, Taurus, Teanna, Tell, Temida, Terli, TESEO, Tetila

Discussion: Tamtbo

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