HA-26-PR
ActiveHelianthus annuus L. · Sunflower
UA
5 records
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.
Harbits
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Wood Timothy D
FR
3 records
Fermer
ActiveHelianthus annuus L. · Sunflower
OOO «SOYa - SEVER Ko» DONSKOJ FILIAL MASLIChNYX KULTUR im. L.A. ZhDANOVA VNIIMK NPF «E`LITA DONA»
UA
5 records
Enea
ActiveOryza sativa L. · Rice
EUGENIO GENTINETTA
RO
4 records
Cynamed
ActiveCynara cardunculus L. · Cardoon
EICH| Dr. J. Eich in Fa. Sertuerner Arzneimittel GmbH / BAYER| Ch. Bayer in Fa. Sertuerner Arzneimittel GmbH / HANNIG| Dr. Hans-Juergen Hannig in Fa. Martin Bauer GmbH & Co KG
DE
5 records
Deniol
ActiveBrassica oleracea L. (Cauliflower Group) · Cauliflower
Organisation Bretonne de Selection-OBS (FR)/Institut National de la Recherche Agronomique (FR)/Cerafel (FR)
FR
3 records
Cheeta
ActiveBrassica oleracea L. (White Cabbage Group) · White cabbage
TAKII EUROPE B V
NL
4 records
Claudie
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Mallet, Corinne
FR
3 records
Challenge
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
J.W.P. Kolk Bloemen B.V.
FR
3 records
Burnetta KWS
TerminatedBeta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE and CO KGAA
DK
3 records
Benxi
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Santho Beveer B. V. (Eveleens C P)
FR
3 records
BG N 4
ActiveHelianthus annuus L. · Sunflower
Cvejic Sandra, Jocic Sinisa,
UA
5 records
Ausonia
TerminatedHelianthus annuus L. · Sunflower
CREA- CENTRO DI RICERCA PER LE COLTURE INDUSTRIALI (CREA-CI-BO)
IT
3 records
7Ppzg02r
ActiveHelianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
UA
3 records
Zo06137
ActiveClematis L. · Clematis
van Zoest Jan
WALHIROSMO
ActiveHybrids between Hibiscus paramutabilis and Hibiscus syriacus
Walberton Plants LTD
Walfrastar
ActiveErysimum L. · Wallflower
Tristram David
Zo09146
ActiveClematis L. · Clematis
van Zoest Jan
WALBREYES
ActiveCrocosmia Planch. · Montbretia
Tristram David|Arundel BN18 OAS, GB
Tinkerbell
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Toyokazu Ichie
Sugamo
ActiveGazania Gaertn. · Treasure flower
Thomas M. Cunneen
Totally Tangerine
ActiveGeum quellyon Sweet x Geum rivale L.
Crowther Timothy|Arundel, GB
Spice Island
ActiveDigitalis L. · Foxglove
Wilson, Heather
SUNBELIV01
ActiveHelianthus annuus L. · Sunflower
Valin Charles