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PHT 77

Active

Zea mays L. Maize · Agricultural · bred by Seifert, Robert P.

also searched as: фт 77

Variety description

10 August 2026

The PHT 77 line is breeding material. It is distinguished by later development stages compared to the PHJ89 line and requires a higher number of heat units for silking.

Morphologically, the plant is characterized by red cobs and a dark green color of the fresh husk. The leaves have a small angle of attachment to the stem, while longitudinal wrinkles and marginal undulations on them are absent or weakly expressed.

Sources2
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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

terminated no record

Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.

Also known as

A single variety may be registered in different countries under different names. All records are consolidated into one profile based on the breeder's code—an internal number that is identical for the variety across all registries.

  • PHT 77 primary HU
  • PHT77 QM, US

The primary name shown is the one under which the variety is registered in the largest number of jurisdictions. Search finds the variety by any of its names.

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

Parties

Breeder
Seifert, Robert P. 27 Developed the variety
Applicant
Pioneer Hi-Bred International, Inc. 46 Submitted the application to the register
Rights holder
Pioneer Hi-Bred International, Inc. 46 Holds the rights to the variety
Maintainer
Pioneer Hi-Bred International Inc. 46 Responsible for variety maintenance

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 № 8800038
Protection expired
  1. Application filed 15 December 1987
  2. Registered 29 July 1988
  3. Entry closed 29 July 2006

More 1 record protections in other jurisdictions are shown on the map above.

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

Same species

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PHRO3

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Nearby in the species list Phrba, Phrca, Phrce, Phrdw, PHRE 1, PHRF-5, Phrho, Phrjb, PHRO3, PHT 57, Pht11, Pht11*Phr61, Pht6v1, PHTA 8, PHTD 5, Phtfe, PHTM 9, Phtm2, PHTW 6, Phv13

Discussion: PHT 77

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