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
Tereshcuk Serhii Mykolaiovych, Kalynchuk Oleh Ivanovych, Sykalova Olena Valentynivna, Ivleva Tetiana Volodymyrivna, Barsukov Ihor Petrovych, Kamyshan Taisiia Petrivna, Kozubenko Leonyd Vasyl`ovych, Chupikov Mykola Mykhailovych,
Helleborus x lemonnierae Demoly
LEMONNIER Martine (FR)
Helianthus annuus L. · Sunflower
Malinovskyi Serhii Volodymyrovych
Secale cereale L. · Rye
Parasovchenko Oleh Oleksandrovych, Tsyhanko Viktor Anatoliiovych, Krainiuk Nina Oleksandrivna, Batsaieva Rita Dmytrivna, Dryl Valentyna Petrivna, Derev'ianko Vira Petrivna, Yehorov Dmytro Kostiantynovych,
Zea mays L. · Maize
Ivleva Tatiana Volodymyrivna, Barsukov Ihor Petrovych, Kamyshan Taisiia Petrivna, Chupikov Mykola Mykhailovych, Kozubenko Leonyd Vasyl`ovych,
Zea mays L. · Maize
Antoniuk Serhii Petrovych, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,
Brassica oleracea L. (White Cabbage Group) · White cabbage
Syaak van der Ploeg
Zea mays L. · Maize
Chupikov Mykola Mykhailovych, Kozubenko Leonid Vasyl`ovych, Kamyshan Taisiia Petrivna, Ivleva Tetiana Volodymyrivna, Barsukov Ihor Petrovych,
Beta vulgaris Sugar Beet Group · Sugar beet
Falatiuk Liudmyla Volodymyrivna, Rybak Volodymyr Oleksiiovych, Kulik Oleksandr Heorhiiovych, Roik Mykola Volodymyrovych,
Zea mays L. · Maize
S. Valchinkov, A. Popov, P. Hristova, P. Petrov, K. Vasileva
Zea mays L. · Maize
Nikola Brusnyashki
Zea mays L. · Maize
Ivleva Tatiana Volodymyrivna, Barsukov Ihor Petrovych, Kamyshan Taisiia Petrivna, Chupikov Mykola Mykhailovych, Kozubenko Leonyd Vasyl`ovych,
Zea mays L. · Maize
Ivleva Tetiana Volodymyrivna, Barsukov Ihor Petrovych, Kamyshan Taisiia Petrivna, Chupikov Mykola Mykhailovych, Kozubenko Leonyd Vasyl`ovych,
Helianthus annuus L. · Sunflower
Kryvosheieva Olena Vatslavivna, Shepilov Borys Petrovych, Popova Ol`ha Andriivna, Veselyi Vitalii Oleksandrovych, Kuzmyshena Nadiia Viktorivna, Syvenko Valentyna Ivanivna, Alad`ina Zoia Kyrylivna, Makliak Kateryna Mykolaivna, Kyrychenko Viktor Vasylovych
Zea mays L. · Maize
Kozubenko Leonid Vasyl`ovych, Kamyshan Taisiia Petrivna, Ivleva Tetiana Volodymyrivna, Barsukov Ihor Petrovych, Chupikov Mykola Mykhailovych,
Beta vulgaris Sugar Beet Group · Sugar beet
Barakhtians`kyi Mykola Pavlovych, Trokhymets` Ol`ha Ivanivna, Herasymenko Volodymyr Hryhorovych, Rybak Volodymyr Oleksiiovych, Lobodyn Oleh Kostiantynovych, Kulik Oleksandr Heorhiiovych, Roik Mykola Volodymyrovych,
Cucumis melo L. · Melon
Clause Semences SA (FR)
Helianthus annuus L. · Sunflower
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Miscanthus x giganteus J. M. Greef & Deuter ex Hodk. & Renvoize · Giant miscanthus
Anna Majewska-Sawka
Helleborus x ericsmithii
Josef Heuger (Gartenbaubetrieb)
Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven
Information regarding the breeder received in the contribution to CPVO :Inaba Masaru
Nicotiana tabacum L. · Tobacco
Instytut Uprawy Nawożenia i Gleboznawstwa Państwowy Instytut Badawczy
Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven
Information regarding the breeder received in the contribution to CPVO :Inaba Masaru
Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven
Information regarding the breeder received in the contribution to CPVO :Yamamoto T.