YASPYELL
ActiveBegonia L. · Begonia
Yates Frederic C.
Variety traits
Cytoplasmic Male Sterility (CMS)
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.
Breakdown by crop
Male Sterility (CMS) — Hydrangea macrophylla
278
Cytoplasmic Male Sterility in Maize
76
Cytoplasmic Male Sterility in Sunflower
74
Male Sterility (CMS) — Sugar Beet
65
Cytoplasmic Male Sterility in Rapeseed
62
Male sterility in Hydrangea
37
Cytoplasmic Male Sterility (CMS) — Rye
25
Cytoplasmic Male Sterility in Rapeseed
23
Male sterility (CMS) — Spanish lavender
17
Cytoplasmic Male Sterility in Rice
15
Cytoplasmic Male Sterility in Tobacco
14
Cytoplasmic Male Sterility (CMS) — White Cabbage
11
Cytoplasmic Male Sterility in Sorghum
10
Cytoplasmic Male Sterility in Sweet Cherry
9
Cytoplasmic Male Sterility (CMS) in Cauliflower
8
Male sterility in Buddleja
8
Male sterility (CMS) — giant miscanthus
8
Male sterility in lilies
8
Cytoplasmic Male Sterility in Barley
7
Cytoplasmic Male Sterility (CMS) in Broccoli
7
Male sterility in mandarin
7
Male sterility in carrot
6
Cytoplasmic Male Sterility (CMS) in Hibiscus syriacus × Hibiscus paramutabilis hybrids
6
Male Sterility (CMS) — Sweet Chestnut
6
Found in these crops
Varieties that feature this in their description
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.
WALHIECLI
ActiveHybrids between Hibiscus paramutabilis and Hibiscus syriacus
Walberton Plants LTD
U0881bg
ActiveHelianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
WALHIRHAP
ActiveHybrids between Hibiscus paramutabilis and Hibiscus syriacus
Walberton Plants LTD
Toffee Chip
ActiveAjuga reptans L. · Bugle
O'Byrne Marietta|Eugene, OR 97402, US
Tomoko
Activex Amarine tubergenii Sealy
Agrofleur Select B.V., Bas van Keulen
TNKNIBP
ActiveKniphofia Moench · Red hot poker
Janet N. Egger
Sunkissed Lime
ActiveGeum L. · Avens
Korlipara Harini
TOBUDMIDNI
ActiveBuddleja davidii Franch. · Butterfly bush
CHARLES VALIN
Starlight
ActiveCoreopsis L. · Tickseed
Probst Darrell R
Sinzii Silverish
ActiveLimonium perezii (Stapf) F. T. Hubb. x L. sinuatum (L.) Mill
Edmond R. Morgan
Super Cott 3
Application submittedCitrus reticulata Blanco · Mandarin orange
Qualiagro SA
T0637hg
ActiveHelianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
Showtime Diva
ActiveGentiana scabra Bunge · Rough gentian
Edmond R. Morgan^^^John Moffatt
SMNHSDD
Activehybrids between Hydrangea macrophylla (Thunb.) Ser. and Hydrangea serrata (Thunb.) Ser.
Wood Timothy
Selina
TerminatedHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Kwekerij Sidaco B.V.
Royal Wave
ActiveCampanula L. · Bellflower
Korlipara Harini|Canby, OR, US
Summer Glow
ActiveAgastache Clayt. ex Gronov. · Giant hyssop
Janet N. Egger
Schrolla17
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Schroll Management ApS
SMNHPH
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Megan Mathey
RFDD
ActiveAgapanthus L'Hér. · Lily of the Nile
CAPE SEED AND BULB (PTY) LTD
Ranice
ActiveHydrangea L. · Hydrangea
RAMPP JUNGPFLANZEN GMBH & CO. VERTRIEBS KG
Senna
TerminatedAgapanthus L'Hér. · Lily of the Nile
P.J.H. ZONNEVELD B.V.
ROU201406
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Guido Rouwette