SMNHALR
ActiveHydrangea arborescens L. · Smooth hydrangea
Wood Timothy D
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.
Ruby Frost
ActiveCoreopsis L. · Tickseed
Korlipara Harini|Canby, OR, US
Pmn06
ActiveAgapanthus praecox subsp orientalis (F.M. Leight) F.M. Leight. · Common agapanthus
Maxwell John|Brassall, AU / Craigie Gail Alexis|Brassell, AU
Pink Pagoda
ActiveBuddleja x weyeriana Weyer · Weyer's butterfly-bush
Peter R. Moore
Nemhapri
ActiveNemesia Vent. · Nemesia
Syngenta Seeds B.V.
Pender
ActiveDiascia Link & Otto · Twinspur
Penhow Nurseries
NCMS2B
ActiveMiscanthus sinensis Andersson · Chinese silver grass
Thomas G. Ranney^^^Darren H. Touchell
Nemhmago
ActiveNemesia Vent. · Nemesia
Syngenta Seeds B.V.
MINDOUB1
ActiveHibiscus syriacus L. · Rose of Sharon
Pineau Patrick
Morning Mist
ActiveBuddleja L. · Buddleia
Peter R. Moore
MINDOUV5
ActiveHibiscus syriacus L. · Rose of Sharon
Pineau Patrick
Pactiovio
Activehybrids between Pelargonium peltatum and Pelargonium zonale · Ivy-leaved geranium
Martin Geibel c/o Elsner pac Jungpflanzen GbR
Mandared
ActiveCitrus L. · Citrus
SANTO RECUPERO,GIUSEPPE RUSSO,GIUSEPPE REFORGIATO RECUPERO,CITRICOM IP (PTY) LTD.
LC NO3
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Schoemaker Alex Frederick
MINSNOW3
ActiveHydrangea hydrangeoides (Siebold & Zucc.) Bernd Schulz · Japanese-hydrangea
Pineau Patrick
Mandarin
ActiveLonicera L. · Honeysuckle
University of British Columbia
LC NO7
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Schoemaker Alex Frederick
MINDOUR1
ActiveHibiscus syriacus L. · Rose of Sharon
Pineau Patrick
Mercury Rising
ActiveCoreopsis L. · Tickseed
Probst Darrell R
Levana
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Possemiers Johan
Mandalate
ActiveCitrus L. · Citrus
RECUPERO, GIUSEPPE REFORGIATO RUSSO, GIUSEPPE RECUPERO, SANTO
LC NO2
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Schoemaker Alex Frederick
Macane005
ActiveAnemone hupehensis Lemoine x A. rupicola Cambess.
Yes applicant details in question 1, No
Kolmakilima
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Kolster Peter Rudolf