P 9578
ActiveZea mays L. · Maize
Pioneer Overseas Cor, USA
Zea mays L. Maize · Agricultural · bred by Pioneer Hi-Bred International, Inc. / Pioneer Hi-Bred International, Inc. / Pioneer Hi-Bred International, Inc.
also searched as: ф42ир
10 August 2026
The line was created during a breeding process initiated in 2008 using the doubled haploid method with subsequent trait stabilization in generations D1, D2, and D3. It is breeding material, not a crop for commercial cultivation.
Morphologically, Ph42yr line plants differ from the Ph1md0 line in greater height, increased ear length, and specific tassel structure characteristics, including spikelet density and the number of lateral branches.
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.
Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 20909182
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
More 2 records protections in other jurisdictions are shown on the map above.
Records are sourced from official registry publications. Data sources and legal status
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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Pioneer Overseas Corporation, Pioneer Hi-Bred International Inc.
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PIONEER HI-BRED INTERNATIONAL
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PIONEER HI-BRED INTERNATIONAL
Nearby in the species list Ph424z, Ph42a9, Ph42cd, Ph42cv, Ph42d7, Ph42dj, Ph42gf, Ph42m1, Ph42n1, Ph42p9, Ph432t, Ph433c, Ph4376, Ph43mz, Ph44a, Ph45a, Ph46451, Ph472j, Ph473g, Ph474b