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

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.

Source F1

Terminated

Solanum lycopersicum L. · Tomato

Hari Besels

1 record

Skh 1006 A

Active

Helianthus annuus L. · Sunflower

Petrenkova Vira Pavlivna, Veselyi Vitalii Oleksandrovych, Kuzmyshena Nadiia Viktorivna, Syvenko Valentyna Ivanivna, Alad`ina Zoia Kyrylivna, Makliak Kateryna Mykolaivna, Kyrychenko Viktor Vasylovych,

2 records

Slobozhans`kyi MV

Terminated

Zea mays L. · Maize

Zdol`nyk Nina Vasylivna, Chernobai Larysa Mykolaivna, Ivlieva Tetiana Volodymyrivna, Barsukov Ihor Petrovych, Kamyshan Taisiia Petrivna, Chupikov Mykola Mykhailovych, Kozubenko Leonid Vasyl`ovych,

2 records

RPK7288CMS

Active

Zea mays L. · Maize

Euralis Semences

2 records

RS22

Terminated

Sorghum bicolor (L.) Moench subsp. bicolor · Sorghum

Euralis Semences FR

1 record

Royal Dynasty

Withdrawn

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

Seminis Vegetable Seeds

1 record

Rumi

Active

Gossypium hirsutum L. · Upland cotton

Institute of Cotton and Durum Wheat - Chirpan (BG)

2 records

Rosamunde

Terminated

Begonia x hiemalis Fotsch · Elatior Begonia

MAN| J. Man

1 record

REYDOVAN

Terminated

Lavandula x intermedia Emeric ex Loisel. · Lavandin

Chambre d'Agriculture de la Drome (FR)

1 record

Rejoice

Active

Iris reticulata M. Bieb.

Bloembollenkwekerij A.J. Kroon & Zn.

1 record

Riabota

Terminated

Helianthus annuus L. · Sunflower

Diadiura Valentyna Petrivna, Borysenko Valerii Andriiovych, Chekhov Anatolii Vasyl`ovych, Shudria Larysa Ivanivna, Lytovchenko Borys Kyrylovych, Kutischeva Nataliia Mykolaivna, Riabota Oleksandr Mykolaiovych,

2 records

RNX4901

Application submitted

Brassica napus L. · Rapeseed

Stephan Pleines

1 record

Reimonta

Withdrawn

Secale cereale x secale montanum

Gerda Reimann-Philipp

1 record

Rablue

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Wädenswil

2 records

R10001 CMS

Active

Zea mays L. · Maize

Stephane Melkior

2 records

R 147

Withdrawn

Helianthus annuus L. · Sunflower

Institut for Wheat & Sunflow - Tolbuchin (BG)

1 record

Primepi

Protection expired

Triticum aestivum L. · Bread wheat

DROMIGNY ET HAMEL (FR)

1 record

PRUCTOR CEMES

Terminated

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

SJAAK VAN DER PLOEG

1 record

R123022

Terminated

Secale cereale L. · Rye

Peter Skov Kristensen

1 record

PROXY2

Terminated

Paulownia Sieb. et Zucc. · Empress tree

Rudenko Artur Leonidovych

2 records

Polis`kyi

Protection expired

Miscanthus x giganteus J. M. Greef & Deuter ex Hodk. & Renvoize · Giant miscanthus

Bovsunovs`kyi Oleksandr Mykolaiovych, Skotsyk Vitalii IEvstafiiovych,

2 records

PHA155

Terminated

Helianthus annuus L. · Sunflower

PIONEER HI-BRED INTERNATIONAL

1 record

Permontra

Terminated

Secale cereale x secale montanum

BUNDESREPUBLIK QUEDLINBURG| Bundesrepublik Deutschland, vertreten durch Julius Kuehn-Institut, Bundesfor-schungsinstitut f.Kulturpflanzen

1 record

Palmaress cambier

Terminated

Triticum aestivum L. · Bread wheat

Cambier Semences (FR)

1 record

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.