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Managed according to the principles and modis operandi described in the Charter and internal regulatios, the national Collection of the "corn" network includes populations and lines of French origin. It includes genotypes that France is responsible for conserving, especially old cultivars and populations of French origin, synthetic populations, lines in common use, including ones known to have identified genes.
This collection is available for exchange or use. On 1st October 1998, the National Collection included nearly 270 populations of metropolitan French origins : 60 synthetic populations created by INRA laboratories, 50 lines created by INRA laboratories.
The data on corn lines and synthetic populations are found in a database managed by the Unité de Recherches de Génétique et Amelioration des Plantes (Plant Improvement and Genetic Research Unit) at INRA, Montpelier. They are published in a directory accessible in France and abroad.In accordance with a Community work programme (CE regulations no.1467/94), support is given to develop conservation, characterisation and use of genetic resources in liaison with other European partners, (www.ensam.inra.fr/gap/resgen88).
For further information on the network, contact :
Anne ZANETTO (INRA Montpellier), anne.zanetto@ensam.inra.fr
What are the network management actions ?
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Corn genetic resources are managed in France by a cooperative network of partners : conservators of public or private establishments, representatives of the sector and institutes concerned by the resources. The modus operandi is described in a Charter and internal regulations. The members of the network agree not only to make their genetic resources available and circulate them, but contribute towards maintaining and assessing them too.
The management applies mainly to French populations and lines.The objective of the network is thus the long-term management of a National Collection available for exchange or use.
 Conservation and storage
1) For seed conservation, prior desiccation is require :
7% humidity for populations, 12 to 15 % humidity for lines.
2) Storage : collection managed in 3 banks : Lines : units lot of 50 seeds.
- One long-term bank and one back-up bank (-20°C, 50 years in sealed aluminium bags for populations, 4°C, 15 years for lines) where the stock is stored as long as possible before regeneration,
- An active bank for storing samples for redistribution (4°C and 40%HR) , sealed aluminium bags of 600 seeds for populations.
Regeneration
For populations : Renewal every 20 to 25 years from 400 individuals for temperate populations and from 100 for Caribbean and Réunion Island populations, 12 lots on each propagation.
For lines : renewal every 10 to 15 years, balanced mixture of 7 self-fertilised cobs.
Distribution
Vegetative-propagation stock : 3 plants per accession.
Sexual-reproduction stock : distribution units of 50 g (± 1000 seeds).
Evaluation and characterisation of genetic resources
The conservators conduct the evaluations and characterisations laid down according to the programmes approved by the network.
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What are the network partners ?
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The network organization is based on the curators, the moderator, the coordination unit, the steering committee and the multilocal evaluation network.
The curators
| Public establishments |
Private establishments |
| INRA, station de Clermont-Ferrand |
ADVANTA |
| station de Lusignan |
CAUSSADE SEMENCES |
station de Montpellier |
CORN STATES INTERNATIONAL |
| station de Saint Martin de Hinx |
EURALIS GENETICS |
| station de Mons en Chaussée |
LIMAGRAIN GENETICS |
| GIS du Moulon |
MAISADOUR SEMENCES |
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MONSANTO |
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NICKERSON France |
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NORDSAAT France |
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PIONEER GENETIQUE |
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R.A.G.T. |
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RUSTICA PROGRAIN GENETIQUE |
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S.D.M.E. /KWS |
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SYNGENTA SEEDS S.A. |
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ZELDER SCEA |
The moderator
Anne ZANETTO (INRA Montpellier), anne.zanetto@ensam.inra.fr
The coordination unit
7 representatives of conservators.
The steering commitee
With the BRG representative, the representative of the Ministry in charge of Agriculture, the INRA representative (Département de Génétique et d'Amélioration des Plantes : Plants Genetic and Improvement Department), the GEVES representative, the network moderator, the technical secretary in charge of the "vegetable" section at the C.T.P.S, the Promaïs representative, the SEPROMA representative, the AGPM representative, 6 conservator representatives.
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More information about maize
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The national Collection (in french) |
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