HP221906
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Hydrangea Breeders Association B.V.
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.
HP220901
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Hydrangea Breeders Association B.V.
Horgew
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Jungpflanzen Claus & Torsten Kühne GbR
IFHEPR
ActiveHeuchera L. · Coral Flower
van den Haak Jelle
HL 1078
Application submittedHelleborus niger x Helleborus x hybridus
Josef Heuger
Hiriv
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Roy Robin van Dijk
HSE1735301
ActiveHydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven
Lendert De Vos
HP221902
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Hydrangea Breeders Association B.V.
HP217903
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Hydrangea Breeders Association B.V.
HORE9103
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Lendert De Vos
Hokomamipe
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Kolster Peter Rudolf,Eveleens Cornelis Pieter
HEIZ0002
Activehybrids between Helianthus annuus L. and Helianthus argophyllus Torr. & A. Gray
Syngenta Flowers LLC
H217902
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
H223906
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
H220912
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
H218911
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
HEIZ0001
Activehybrids between Helianthus annuus L. and Helianthus argophyllus Torr. & A. Gray
Syngenta Flowers LLC
GRHP14
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Guido Rouwette
Dolfarf
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Marie-France Doll
H223904
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
ET RDB 949
ActiveHybrids between Echinacea purpurea and Rudbeckia hirta
Eternal Plant Boijl B.V.
FRCK 003 S 9
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hiroyuki Mekada, Hiroko Inamura, Tetsuya Kato, Yuka Shimizu
FRCK 003 S 123
Application submittedHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hiroyuki Mekada, Hiroko Inamura, Tetsuya Kato, Yuka Shimizu
Dolkis
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Marie-France Doll