Haitabu
Protection expiredBrassica oleracea L. (Broccoli Group) · Broccoli
DE
2 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.
Cspol 2
TerminatedBrassica napus var. napus · Rapeseed
IT
2 records
Cshp 003
TerminatedBrassica napus var. napus · Rapeseed
DK
2 records
Fabio
ActiveBrassica oleracea L. (Kohlrabi Group) · Kohlrabi
DE
2 records
Coloradoro
TerminatedBeta vulgaris Sugar Beet Group · Sugar beet
NL
3 records
BTS 8750 N
TerminatedBeta vulgaris Sugar Beet Group · Sugar beet
DE
2 records
Bramley's Seedling
ActiveMalus domestica (Suckow) Borkh. · Apple
NL
4 records
CMS 3
ActiveHelianthus annuus L. · Sunflower
UA
2 records
Costantino
ActiveBrassica oleracea L. (Broccoli Group) · Broccoli
HU
2 records
Coolidge
TerminatedAllium porrum L. · Leek
NL
2 records
Braveheart
TerminatedBrassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts
NL
2 records
Bramley
ActiveMalus domestica (Suckow) Borkh. · Apple
NL
2 records
Bluetan
TerminatedAllium porrum L. · Leek
NL
2 records
BRANCA
ActiveCastanea sativa Mill. · Sweet chestnut
ES
3 records
BORRIOLENCA
ActiveOlea europaea L. · Olive
ES
3 records
BTS 845
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
DE
2 records
Boskopska lepotica
ActiveMalus domestica (Suckow) Borkh. · Apple
SI
2 records
7Pkpw38r
ActiveHelianthus annuus L. · Sunflower
UA
2 records
OK-T14 Jackpot
Application submittedCichorium intybus L. · Chicory
Hoquet Endives (FR)
FR
1 record
Pam'iat` Chupikova
TerminatedZea mays L. · Maize
Sikalova Olena Valentynivna, Ovsiannikova Nataliia Stanislavivna, Ivleva Tetiana Volodymyrivna, Barsukov Ihor Petrovych, Kamyshan Taisiia Petrivna, Chupikov Mykola Mykhailovych, Kozubenko Leonyd Vasyl`ovych,
UA
2 records
Myr M sterylnyi
TerminatedZea mays L. · Maize
Havryliuk Viktor Mykolaiovych, Ponomarenko Halyna Ivanivna, Blashchuk Mykhailo Ivanovych, Lytus Mykola Volodymyrovych, Morhun Volodymyr Vasylovych
UA
2 records
LO 115P LO 133N
TerminatedSecale cereale L. · Rye
Peer Wilde
UA
2 records
Kerbelrosa
Application submittedPrimula vulgaris Huds. · Primrose
Kerley Co Ltd
Kolmamova
Application submittedHydrangea paniculata Siebold · Panicled hydrangea
Kolster Holding B.V.