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.
Beta vulgaris Sugar Beet Group · Sugar beet
Stefaan Horemans
Triticum aestivum L. · Bread wheat
Ets Claude Camille Benoist SA (FR)
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
SNOWFLAKE NURSERY (US)
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Wädenswil
Brassica napus var. napus · Rapeseed
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Lemoine
Prunus avium (L.) L. · Sweet cherry
Agriculture and Agri-Food Canada| CA
Begonia x hiemalis Fotsch · Elatior Begonia
KOPPE L.H.| L. H. Koppe
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Petar L. Bozhinov
Beta vulgaris Sugar Beet Group · Sugar beet
Smetana Petro Mar'ianovych, Dubrovnaia Oksana Vasylivna, Lial`ko Iryna Ivanivna, Huk Andrii Volodymyrovych, Parii Anna Fedorivna, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych, Parii Fedir Mykytovych,
Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven
No information of breeder available for this variety
Citrus reticulata Blanco · Mandarin orange
IVIA
Begonia x hiemalis Fotsch · Elatior Begonia
KOPPE L.H.| L. H. Koppe
Beta vulgaris Sugar Beet Group · Sugar beet
Saienko Petro Ivanovych, Lytvyniuk Volodymyr Viktorovych, Herasymenko Volodymyr Hryhorovych, Harmatiuk Natalia Vasylivna, Halashevs`kyi Viktor Leonidovych, Rybak Volodymyr Oleksiiovych, Trokhymets` Ol`ha Ivanivna, Parii Fedir Mykytovych, Lobodyn Oleh Kost
Zea mays L. · Maize
Gribincea Vladimir Nicolae, Lebediuc Gheorghe Victor, Ciobanu Valentin Gheorghe, Spinu Angela Petru, Partas Eugenia Condrat, Meleka Anatol Constantin, Marangici Gheorghe Constantin, Mistret Silvia Ion, Guzun Lucia Zahar, Vanicovici Nicolai Gheorghe, Matic
Helianthus annuus L. · Sunflower
Burlov Viktor Vasylovych
Beta vulgaris Sugar Beet Group · Sugar beet
KUTNOWSKA HODOWLA BURAKA CUKROWEGO Sp.z o.o.
Zea mays L. · Maize
Voloshyna Lidiia Ivanivna
Secale cereale L. · Rye
Hlukhova Nataliia Anatoliivna, Dem'ianenko Svitlana Borysivna, Tsyhanko Viktor Anatoliiovych, Dryl Valentyna Petrivna, Yehorov Dmytro Kostiantynovych,
Helianthus annuus L. · Sunflower
Dobroudja Agricultural Institute - General Toshevo (BG)
Cucumis melo L. · Melon
Clause Semences SA (FR)
Zea mays L. · Maize
Frantz Boudet
Beta vulgaris Fodder Beet Group · Mangelwurzel
Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy
Beta vulgaris Sugar Beet Group · Sugar beet
Kulik Oleksandr Heorhiiovych, Roik Mykola Volodymyrovych, Kovalchuk Natalia Stepanivna, Varenyk Kateryna Oleksiivna, Pavlenko Lidiia Anatoliivna, Smirnykh Lidiia Mykolaivna, Vlasiuk Vitalii Ivanovych, Vydryk Vira Oleksiivna, Palamarchuk Liubov IUriivna, K