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.
Helianthus annuus L. · Sunflower
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Hydrangea L. · Hydrangea
Ebihara Hiroshi
Beta vulgaris Sugar Beet Group · Sugar beet
KWS Saat AG, DE
Hydrangea anomala D. Don subsp. petiolaris (Siebold & Zucc.) E. M. McClint. · Climbing hydrangea
Information regarding the breeder received in the contribution to CPVO :Benarcik D.
Beta vulgaris Sugar Beet Group · Sugar beet
FLORIMOND DESPREZ,S.A.
Beta vulgaris Sugar Beet Group · Sugar beet
Florimond Desprez Veuve et Fils, FR
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Zea mays L. · Maize
Shevchenko Serhii Oleksandrovych, Klimova Oksana IEvhenivna, Maniatina Liudmyla Oleksandrivna, Kuprichenkova Tetiana Hryhorivna, Aldoshyn Anatolii Vasylovych, Bielikov IEvhen Illich, Dziubetskyi Borys Volodymyrovych,
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
TOZER SEEDS LTD
Sorghum bicolor (L.) Moench subsp. bicolor · Sorghum
Eurosorgho (FR)
Zea mays L. · Maize
Lidea France S.A.S
Solanum melongena L. · Eggplant
HAO-DEMETER Institute of Plant Breeding and Genetic Resources
Hydrangea paniculata Siebold · Panicled hydrangea
Rein Bulk
Zea mays L. · Maize
Olizko Oleksii Petrovych, Fedorenko Eduard Mykolaiovych, Kupar Ivan Mykhailovych, Haidash Oleksandr Leonidovych, Riabchenko Eduard Mykolaiovych, Bodenko Natalia Anatoliivna, Ilchenko Larysa Anatoliivna, Fedko Mykola Mykolaiovych, Cherchel Vladyslav IUriio
Zea mays L. · Maize
Antoniuk Serhii Petrovych, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,
Zea mays L. · Maize
Cherchel Vladyslav IUriiovych, Dziubyts`kyi Borys Volodymyrovych,
Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven
Marie-France Doll, Yves Doll
Zea mays L. · Maize
Dziubetskyi Borys Volodymyrovych, Antoniuk Serhii Petrovych, Cherchel Vladyslav IUriiovych,
Zea mays L. · Maize
Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,
Nicotiana tabacum L. · Tobacco
Hrvatski duhani d.d., Virovitica (HR)
Hydrangea arborescens L. · Smooth hydrangea
Kromhout Woulter
Nicotiana tabacum L. · Tobacco
Hrvatski duhani d.d., Virovitica (HR)
Prunus domestica L. · European plum
Thomas O. CHAMBERLIN (US)
Cannabis sativa L. · Hemp
Canimpex GmbH (CH)