Variety traits
Helianthus annuus L.
A genetic mechanism for controlling male sterility in sunflower, used to create heterotic hybrids and eliminate the need for manual emasculation of maternal lines. It is based on specific mitochondrial markers and nuclear fertility-restorer genes.
In the reference 74 varieties crop Sunflower, where this is mentioned in the description.
The primary tool for assessing sterility is cytological analysis of pollen, which determines its degree of defectiveness. Sterile lines based on the most common PET1 CMS type are characterized by the absence of viable pollen or anther degeneration, with the standard requirement for sterility in maternal forms being 95–98%.
Molecular genetic identification of a line's status is conducted using PCR methods to detect the mitochondrial gene orfH522 and the nuclear fertility-restorer genes Rf1. The use of the CMS-Rf system allows for the breeding of highly productive hybrids; however, the high proportion of hybrids based on PET1 cytoplasm creates a risk of genetic vulnerability, which stimulates the search for alternative types, such as RIG0.
General information about the subject — on the page Cytoplasmic Male Sterility (CMS).
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Helianthus annuus L. · Sunflower
Pioneer Hi-Bred International Inc., USA
Helianthus annuus L. · Sunflower
Y. Stoyanova, P. Petrov, V. Velkov, A. Piskov, P. Ivanov, P. Shindrova, F. Tsvetkova, I. Ivanov
Helianthus annuus L. · Sunflower
V. Velkov, P. Shindrova, V. Encheva, D. Petakov, P. Petrov, A. Piskov, M. Hristov, Yu. Encheva, G. Georgiev
Helianthus annuus L. · Sunflower
Saaten Union Romania, RO
Helianthus annuus L. · Sunflower
SC Saaten Union Romania S.R.L.
Helianthus annuus L. · Sunflower
Piquemal, Georges
Helianthus annuus L. · Sunflower
VRANCEANU ALEXANDRU VIORELPACUREANU JOITA MARIASTANCIU DANILSTANCIU MARIA
Helianthus annuus L. · Sunflower
VRANCEANU ALEXANDRU VIORELSOARE GABRIELACRAICIU DAN SORINVOINESCU GHEORGHE
Helianthus annuus L. · Sunflower
INST.ZA RATARSVO
Helianthus annuus L. · Sunflower
JOSE RAMON PEREZ MONREAL
Helianthus annuus L. · Sunflower
Tseve Krasteva Velkova, Galin Georgiev Georgiev,
Helianthus annuus L. · Sunflower
Amelia Bertero, Arnaldo Vazquez,
Helianthus annuus L. · Sunflower
Agri Genetics Company (US)
Helianthus annuus L. · Sunflower
AGRI OBTENTIONS / INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE (I.N.R.A.)
Helianthus annuus L. · Sunflower
Vladimir Miklich, Drahan Shkorych, Deian Iovanovych,
Helianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
Helianthus annuus L. · Sunflower
PIONEER HI-BRED INTERNATIONAL
Helianthus annuus L. · Sunflower
VRANCEANU ALEXANDRU VIORELSTANCIU DANILPACUREANU JOITA MARIASTANCIU MARIA
Helianthus annuus L. · Sunflower
PETRAN ALEXANDRU VIORELDRAGHIA VIOLETA CONSTANTAOPROI ADRIANA CRISTINA
Helianthus annuus L. · Sunflower
Helianthus annuus L. · Sunflower
OOO «SOYa - SEVER Ko» DONSKOJ FILIAL MASLIChNYX KULTUR im. L.A. ZhDANOVA VNIIMK NPF «E`LITA DONA»
Helianthus annuus L. · Sunflower
Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
CREA- CENTRO DI RICERCA PER LE COLTURE INDUSTRIALI (CREA-CI-BO)
Helianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION