Variety traits
CMS is a condition in plants where pollen is either not produced or is non-viable despite the normal development of female organs. It is a fundamental trait in commercial seed production that prevents self-pollination and allows the production of hybrid seeds without manual emasculation.
Mentioned in descriptions 4 451 varieties reference book.
Cytoplasmic male sterility manifests as the absence of fertile pollen, while pistillate organs remain functional. In breeding processes, such plants are used as maternal lines, which are pollinated by paternal forms to ensure 100% hybridity of the offspring. To obtain commercial fertile hybrids, nuclear fertility-restorer genes are introduced into the plant genotype, ensuring normal pollen development in the final product.
The trait is evaluated by determining the degree of pollen sterility, morphological examination of anthers for signs of degeneration and their ability to dehisce, as well as by microscopic analysis of pollen grains. Modern methods include the use of molecular DNA markers to identify sterility genes in mitochondria and restorer genes in the nucleus.
The manifestation of CMS depends on the interaction between the genotype and environmental conditions, including temperature and humidity, which can affect the stability of the trait. Incomplete fertility restoration in commercial crops can lead to seed set issues, so when selecting a hybrid, the originator's guarantee regarding the effective performance of fertility restorers under field conditions is important.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :EVELEENS C P
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Mallet, Corinne
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Graines Gautier SA (FR)
Phaseolus vulgaris L. · Common bean
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Astrantia L. · Masterwort
AAD Geerlings
Hydrangea L. · Hydrangea
RAMPP JUNGPFLANZEN GMBH & CO. VERTRIEBS KG
Zea mays L. · Maize
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
PIONEER HI-BRED INTERNATIONAL
Oryza sativa L. · Rice
Sultan Sahin, Recep Kaya, Necmi Beser, Halil Surek,
Brassica napus var. napus · Rapeseed
FRAUEN| Norddeutsche Pflanzenzucht Hans-Georg Lembke KG. Herrn Dr. Martin Frauen / PAULMANN| Dr. Werner Paulmann
Secale cereale L. · Rye
DANKO HODOWLA| "DANKO" Hodowla Roslin Sp. z o.o.
Helianthus annuus L. · Sunflower
VRANCEANU ALEXANDRU VIORELSTANCIU DANILPACUREANU JOITA MARIASTANCIU MARIA
Brassica napus var. napus · Rapeseed
Werner Paulmann^^^Martin Frauen
Beta vulgaris L. · Beet
Zwaan-Bieten B.V.
Helianthus annuus L. · Sunflower
PETRAN ALEXANDRU VIORELDRAGHIA VIOLETA CONSTANTAOPROI ADRIANA CRISTINA
Brassica napus var. napus · Rapeseed
Norddeutsche Pflanzenzucht Hans-Georg Lembke KG. Herrn Dr. Martin Frauen / Hanns-Erich Winkelmann
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Wood Timothy D
Brassica napus var. napus · Rapeseed
Serasem (FR)/Institut National de la Recherche Agronomique (FR)
Hydrangea quercifolia W. Bartram · Oakleaf hydrangea
Jarzynka David|Olympia, WA 98501
Prunus avium (L.) L. · Sweet cherry
Prunus avium (L.) L. · Sweet cherry
Oryza sativa L. · Rice
Trakiy Agricultural Research Institute (TR)
Secale cereale L. · Rye
Hodowla Roslin Smolice Sp.z o.o Grupa IHAR
Brassica napus var. napus · Rapeseed
Semences Cargill SA (FR)