Variety traits
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.
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.
Zea mays L. · Maize
Antoniuk Serhii Petrovych, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,
Zea mays L. · Maize
Antoniuk Serhii Petrovych, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,
Zea mays L. · Maize
Bondar Tetiana Mykolaivna, Abelmasov Oleksii Viktorovych, Fedko Mykola Mykolaiovych, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,
Brassica oleracea L. (Kohlrabi Group) · Kohlrabi
Bejo Zaden B.V.
Zea mays L. · Maize
Kupar Ivan Mykhailovych, Haidash Oleksandr Leonidovych, Fedko Mykola Mykolaiovych, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,
Zea mays L. · Maize
Antoniuk Serhii Petrovych, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,
Solanum lycopersicum L. · Tomato
Hristo Georgiev
Beta vulgaris Sugar Beet Group · Sugar beet
Khermann Shtrube
Brassica napus var. napus · Rapeseed
FRAUEN| Dr. Martin Frauen in Fa. Norddeutsche Pflanzenzucht Hans-Georg Lembke KG.
Beta vulgaris Sugar Beet Group · Sugar beet
SEITZER| Dr. Josef Franz Seitzer in Fa. KWS SAAT AG / JANSEN| Dr. Rudolf Jansen in Fa. KWS SAAT AG / DIENER| Dr. Guenter Diener / LOOCK| Dr. Andreas Loock in Fa. KWS SAAT AG
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Meinl Katrin|Dresden, DE
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :HBA B.V.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Dirr M.
Helleborus x nigercors J. T. Wall
Josef Heuger (Gartenbaubetrieb)
Helianthus annuus L. · Sunflower
N.DAKOTA UNI.FARGO
Beta vulgaris Sugar Beet Group · Sugar beet
K. Uchkunova, I. Uchkunov, G. Kikindonov, Tsv. Kikindonov
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Dirr M.
Helianthus annuus L. · Sunflower
Andras Gulyas
Helianthus annuus L. · Sunflower
N.DAKOTA UNI.FARGO
Brassica napus var. napus · Rapeseed
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Allium cepa L. var. cepa · Onion
Przemysław Jazic
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
JOHN HEDGER
Lilium L. · Lily
World Breeding B.V