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.
Helianthus annuus L. · Sunflower
Piquemal, Georges
Beta vulgaris Sugar Beet Group · Sugar beet
Stefaan Horemans
Brassica napus var. napus · Rapeseed
Syngenta Crop Protection AG, CH
Helianthus annuus L. · Sunflower
VRANCEANU ALEXANDRU VIORELPACUREANU JOITA MARIASTANCIU DANILSTANCIU MARIA
Helianthus annuus L. · Sunflower
VRANCEANU ALEXANDRU VIORELSOARE GABRIELACRAICIU DAN SORINVOINESCU GHEORGHE
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Hydrangea L. · Hydrangea
HORN HEINZ| Heinz Horn
Brassica oleracea L. (White Cabbage Group) · White cabbage
Syngenta Seeds B.V.
Secale cereale L. · Rye
DR GILBERT MELZ^^^GUDRUN MELZ
Beta vulgaris Sugar Beet Group · Sugar beet
Strube D&S GMBH
Malus domestica (Suckow) Borkh. · Apple
Piet de SONNAVILLE (NL)
Allium cepa L. · Onion
Nakatsugawa Masakazu
Brassica napus var. napus · Rapeseed
JOHANNES DIECKMANN
Helianthus annuus L. · Sunflower
INST.ZA RATARSVO
Brassica napus var. napus · Rapeseed
RAPS| RAPS GbR Saatzucht Lundsgaard
Helianthus annuus L. · Sunflower
JOSE RAMON PEREZ MONREAL
Sorghum bicolor (L.) Moench subsp. bicolor · Sorghum
LIDEA FRANCE SAS
Beta vulgaris Sugar Beet Group · Sugar beet
Dr. Herman Strube
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Shahrokh Khanizadeh
Lavandula stoechas L. · French lavender
Robert Wijsman
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
van Zoest B.V. Andre|Reeuwijk 2811 PS, NL
Lilium L. · Lily
Mak Nicolaas Aloysius Maria
Hordeum vulgare L. · Barley
Löhde Jörgen
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Syngenta Seeds BV, Netherlands