Know more

About cookies

What is a "cookie"?

A "cookie" is a piece of information, usually small and identified by a name, which may be sent to your browser by a website you are visiting. Your web browser will store it for a period of time, and send it back to the web server each time you log on again.

Different types of cookies are placed on the sites:

Cookies strictly necessary for the proper functioning of the site
Cookies deposited by third party sites to improve the interactivity of the site, to collect statistics

Learn more about cookies and how they work

The different types of cookies used on this site

Cookies strictly necessary for the site to function

These cookies allow the main services of the site to function optimally. You can technically block them using your browser settings but your experience on the site may be degraded.

Furthermore, you have the possibility of opposing the use of audience measurement tracers strictly necessary for the functioning and current administration of the website in the cookie management window accessible via the link located in the footer of the site.

Technical cookies

Name of the cookie	Purpose	Shelf life
CAS and PHP session cookies	Login credentials, session security	Session
Tarteaucitron	Saving your cookie consent choices	12 months

Audience measurement cookies (AT Internet)

Name of the cookie	Purpose	Shelf life
atid	Trace the visitor's route in order to establish visit statistics.	13 months
atuserid	Store the anonymous ID of the visitor who starts the first time he visits the site	13 months
atidvisitor	Identify the numbers (unique identifiers of a site) seen by the visitor and store the visitor's identifiers.	13 months

About the AT Internet audience measurement tool :

AT Internet's audience measurement tool Analytics is deployed on this site in order to obtain information on visitors' navigation and to improve its use.

The French data protection authority (CNIL) has granted an exemption to AT Internet's Web Analytics cookie. This tool is thus exempt from the collection of the Internet user's consent with regard to the deposit of analytics cookies. However, you can refuse the deposit of these cookies via the cookie management panel.

Good to know:

The data collected are not cross-checked with other processing operations
The deposited cookie is only used to produce anonymous statistics
The cookie does not allow the user's navigation on other sites to be tracked.

Third party cookies to improve the interactivity of the site

This site relies on certain services provided by third parties which allow :

to offer interactive content;
improve usability and facilitate the sharing of content on social networks;
view videos and animated presentations directly on our website;
protect form entries from robots;
monitor the performance of the site.

These third parties will collect and use your browsing data for their own purposes.

How to accept or reject cookies

When you start browsing an eZpublish site, the appearance of the "cookies" banner allows you to accept or refuse all the cookies we use. This banner will be displayed as long as you have not made a choice, even if you are browsing on another page of the site.

You can change your choices at any time by clicking on the "Cookie Management" link.

You can manage these cookies in your browser. Here are the procedures to follow: Firefox; Chrome; Explorer; Safari; Opera

For more information about the cookies we use, you can contact INRAE's Data Protection Officer by email at cil-dpo@inrae.fr or by post at :

INRAE

24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

Gelista

Gelista^TM

- Test for plant frost resistance

- Measuring of organ micro-deformation according to temperature and evaluation of the cellular lysis.

- Applicable for a wide range of species.

APPLICATION

Plant frost resistance.
Lethal temperature characterisation.
Plant breeding.
Physiologic diagnosis for plant conditioning.
Impact of cold hardening favouring treatments.
Variety screening

Frost is one of the most important disruptive elements for agricultural productivity and cultivation expansion in certain disadvantaged areas . Plant frost resistance is progressively obtained all along a hardening phase. This hardening, that takes place in autumn, is under control of external conditions (temperature and light) and more specific internal factors (which result from growth internal rate). Early freezing is susceptible of destroying plants which have not been enough hardened.

In new variety production, "frost resistance" criteria is included in the selection diagram. Introducing classical frost resistance tests (mortality after different temperature conditioning , LT 50: level of temperature to which 50% of the cellular lysis is obtained, electric conductivity measurement…) is difficult even impossible because of their ?. Today, the frost resistance is empirically estimated by on field few year behaviour.) is obtained, electric conductivity measuring…), is difficult, even impossible. Actually the quantity of plant materials obtained from various crossing is very low (1plant) and thus incompatible for putting into practice these costly classic tests for plant materials. Besides, the classic test costs (numerous thermal conditioning) increase the plant cost price, strongly reducing the profit margin.

The Gelista^TM test designed by INRA (PIAF), allows to classic test obstacle avoiding, which are very costly regarding plant materials and analysis time.

It uses a brand new technology (dimension micro-sensors) and methodology (radial deformation analysis for a stalk or bark segment). In allows to obtain an early evaluation of new varieties with regard to frost and to define plant hardening.

Gelista Design

Cold Hardiness determination and freezing resistance apparatus.

Références : Améglio T., Cochard H., Lacointe A., Ewers F.W., Sauter J., Martignac M.,Vandame M., Bodet C., Cruiziat P., 2001 - Adaptation to cold temperature and response to freezing in walnut tree. 4th International Walnut symposium. Ed. E. Germain, Acta Hortic. 544, 247-254.

Améglio T., Cochard H., Ewers FW, Lacointe A., Leveque A. Cold hardiness: a new tool for testing acclimation- . Ed. Labrecque M. “L’Arbre 2001 The Tree”. Collection Collectif, I.Q. editeur, Montréal (Quebec) Canada, pp. 216-224.

Tél : +33 4 43 76 14 01

+33 4 43 76 14 09

Fax :+33 4 43 76 14 10

Thierry.Ameglio@inrae.fr

Herve.Cochard@inrae.fr