Know more

Our use of cookies

Cookies are a set of data stored on a user’s device when the user browses a web site. The data is in a file containing an ID number, the name of the server which deposited it and, in some cases, an expiry date. We use cookies to record information about your visit, language of preference, and other parameters on the site in order to optimise your next visit and make the site even more useful to you.

To improve your experience, we use cookies to store certain browsing information and provide secure navigation, and to collect statistics with a view to improve the site’s features. For a complete list of the cookies we use, download “Ghostery”, a free plug-in for browsers which can detect, and, in some cases, block cookies.

Ghostery is available here for free: https://www.ghostery.com/fr/products/

You can also visit the CNIL web site for instructions on how to configure your browser to manage cookie storage on your device.

In the case of third-party advertising cookies, you can also visit the following site: http://www.youronlinechoices.com/fr/controler-ses-cookies/, offered by digital advertising professionals within the European Digital Advertising Alliance (EDAA). From the site, you can deny or accept the cookies used by advertising professionals who are members.

It is also possible to block certain third-party cookies directly via publishers:

Cookie type

Means of blocking

Analytical and performance cookies

Realytics
Google Analytics
Spoteffects
Optimizely

Targeted advertising cookies

DoubleClick
Mediarithmics

The following types of cookies may be used on our websites:

Mandatory cookies

Functional cookies

Social media and advertising cookies

These cookies are needed to ensure the proper functioning of the site and cannot be disabled. They help ensure a secure connection and the basic availability of our website.

These cookies allow us to analyse site use in order to measure and optimise performance. They allow us to store your sign-in information and display the different components of our website in a more coherent way.

These cookies are used by advertising agencies such as Google and by social media sites such as LinkedIn and Facebook. Among other things, they allow pages to be shared on social media, the posting of comments, and the publication (on our site or elsewhere) of ads that reflect your centres of interest.

Our EZPublish content management system (CMS) uses CAS and PHP session cookies and the New Relic cookie for monitoring purposes (IP, response times).

These cookies are deleted at the end of the browsing session (when you log off or close your browser window)

Our EZPublish content management system (CMS) uses the XiTi cookie to measure traffic. Our service provider is AT Internet. This company stores data (IPs, date and time of access, length of the visit and pages viewed) for six months.

Our EZPublish content management system (CMS) does not use this type of cookie.

For more information about the cookies we use, contact INRA’s Data Protection Officer by email at cil-dpo@inra.fr or by post at:

INRA
24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

Menu Logo Principal Agrocampus Ouest Rennes 1 University Logo Igepp

Home page

Erwan Corlouer

Identification of the genetic and molecular determinants controlling seed yield stability in winter oilseed rape

Thesis started november 1st, 2018 - Defended in november, 2019 19th
Funding: PIA RAPSODYN
Direction: Nathalie Nesi

--------------------------------------------

Abstract:

One of the current challenges in plant breeding is to ensure optimized and stable production in low-input cropping systems under fluctuating environments. The observed phenotype results from the expression of the effects of the genotype and the environment in addition to genotype × environment interactions (G×E). Breeding for varieties that are stable/adapted to a wide range of environments or, on the opposite, specifically adapted to targeted environments, requires understanding and exploiting the G × E interactions. In this context, this thesis work aimed at answering the following questions: i) what are the main abiotic factors limiting seed yield in winter oilseed rape, ii) how can these factors be used to define environmental typologies that make it possible to characterize and cluster environments to decompose the G×E interaction, and finally iii) is this envirotyping relevant to characterize the genetic determinants controlling the G×E ?

A strategy based on the characterization and analysis of a network of 47 trials spread over the main rapeseed growing areas in France and conducted under contrasting nitrogen nutrition regimes, was used to identify the factors limiting seed yield in rapeseed and to cluster the trials into envirotypes. Subsequently, a genome wide association study was conducted on 173 winter oilseed rape genotypes tested within this network in order to identify the QTL that control seed yield and the G×E interaction. Stable and specific QTL were identified according to envirotypes. The interest of this approach and the results obtained are discussed, particularly with the regards to their potential use in breeding programs.

Poster-2019-CORLOUER-Erwan

See also