PR 63 A 90
ActiveHelianthus annuus L. · Sunflower
Soper, John
10 August 2026
The 7Pkpw38r line is a fertility restorer for the CMS PET 1 cytoplasm and is homozygous for the corresponding dominant factor. It was developed by the backcross method based on genetic material from the companies Pioneer Hi-Bred International and Mycogen Seeds.
The plants possess tolerance to tribenuron-methyl group herbicides according to the ExpressSun technology. The line has no stated resistance to common sunflower diseases and pests. Data on morphological traits are not publicly available as the material is intended for breeding purposes.
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.
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
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
Same species
Helianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. · Sunflower
Revol Benoit
Helianthus annuus L. · Sunflower
Oliv"ie Ladsus
Helianthus annuus L. · Sunflower
Ion Sandu
Helianthus annuus L. · Sunflower
Ion Sandu
Helianthus annuus L. · Sunflower
Pioneer Overseas Corporation, USA
Nearby in the species list 7Phbg97r, 7Phft86a, 7Phft86b, 7Pjcq56a, 7Pjcq56b, 7Pjdn92r, 7Pjqs48a, 7Pjqs48b, 7Pkeb40a, 7Pkeb40b, 7Pkvl42r, 7Pkzz62a, 7Pkzz62b, 7Plfc16r, 7Plvk55a, 7Plvk55b, 7Plwc84b, 7Pmjy25r, 7Pmkr53a, 7Pmkr53b