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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.

Sources10

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

Bigleaf hydrangea 278 Tea-of-heaven 104 Panicled hydrangea 94 Sunflower 77 Maize 74 Rapeseed 69 Sugar beet 64 Hydrangea 38 Rye 26 Rapeseed 22 French lavender 21 Apple 20

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.

CONDOWHITE

Terminated

Petunia Juss. · Petunia

Ushio Sakazaki

1 record

Briar Rose

Withdrawn

Helleborus L. · Christmas Rose

ASHWOOD NURSERIES LTD

1 record

BKLVSTFLI

Terminated

Lavandula stoechas L. · French lavender

Annie Cornelia Beekenkamp

1 record

Daniel Searle

Active

Vitex pseudonegundo (Hausskn.) Hand.-Mazz.

Kris Jarantoski

1 record

Butterfly Gold

Withdrawn

Buddleja davidii Franch. · Butterfly bush

Judy Hurley

2 records

David Searle

Active

Vitex pseudonegundo (Hausskn.) Hand.-Mazz.

Kris Jarantoski

1 record

Balmibepro

Terminated

Penstemon Schmidel. · Beard Tongue

Valentin Taquet

1 record

CL2231974R

Withdrawn

Brassica napus var. napus · Rapeseed

Agrigenetics Inc. D/B/A Mycogen Seeds

1 record

Cherry Sparks

Terminated

Penstemon Schmidel. · Beard Tongue

Valentin Taquet

1 record

Baroque Angel

Terminated

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Frauke Engel

1 record

ANEM078LES

Active

Anemone x lesseri H. R. Wehrh.

Henk Holtmaat

1 record

Bee Sweet

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Mike Dofferhoff^^^Hans Dofferhoff

1 record

Bokomagande

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Kolster Holding B.V., Boot & Co. Boomkwekerijen B.V.

1 record

Bee Happy

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Hans Dofferhoff^^^Mike Dofferhoff

1 record

BC2402AC

Application submitted

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Blooming Creations International B.V.

1 record

Bepared

Terminated

Begonia L. · Begonia

PanAmerican Seed Europe B.V.

1 record

Amante

Active

hybrids between Salvia guaranitica A. St.-Hil. ex Benth.and Salvia x westerae J. R. I. Wood

Rolando Uría

1 record

Agpatbicblula

Withdrawn

Ageratum houstonianum Mill. · Flossflower

Syngenta Seeds B.V.

1 record

22B30

Application submitted

Hydrangea scandens (L. f.) Ser.

Marie-France Doll

1 record

Zennith F1

Terminated

Brassica oleracea L. (White Cabbage Group) · White cabbage

KoungGu Ahn

UA
1 record

Limit

Active

Helianthus annuus L. · Sunflower

Titov Serhii Ivanovych, Burlov Viktor Viktorovych, Burlov Viktor Vasylovych,

UA
2 records

Krasnodars`kyi 194 MV

Terminated

Zea mays L. · Maize

Potapov Oleksandr Petrovych, Hrydn`ov Eduard Petrovych, Zhukov Mykhailo Pylypovych, Ohnianyk Liudmyla Hryhorivna, Mashnenkov Oleksandr Semenovych, Prylyps`kyi Mykola Ivanovych, Luk"ianenko Nataliia Hryhorivna, Normov Oleksandr Ivanovych, Suprunov Anatolii

UA
1 record

Donor M

Terminated

Zea mays L. · Maize

Chupikov Mykola Mykhailovych, Kozubenko Leonid Vasyl`ovych, Kamyshan Taisiia Petrivna, Ivleva Tetiana Volodymyrivna, Barsukov Ihor Petrovych,

UA
2 records

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