{"id":5679,"date":"2022-07-29T15:57:41","date_gmt":"2022-07-29T19:57:41","guid":{"rendered":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/?p=5679"},"modified":"2022-07-29T17:12:11","modified_gmt":"2022-07-29T21:12:11","slug":"les-limites-dadaptation-des-arbres-aux-stress-climatiques","status":"publish","type":"post","link":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/?p=5679","title":{"rendered":"Les limites de l&rsquo;adaptation des arbres aux stress climatiques"},"content":{"rendered":"\n<p>Dans le contexte des changements climatiques, un article vient d&rsquo;\u00eatre publi\u00e9 par les chercheurs de la Chaire sur la m\u00e9sadaptation des arbres face aux stress climatiques s\u00e9v\u00e8res entra\u00een\u00e9s par l&rsquo;instabilit\u00e9 grandissante du climat. Le printemps 2021 a \u00e9t\u00e9 exceptionnellement chaud et h\u00e2tif sous nos latitudes septentrionales, entra\u00eenant le d\u00e9bourrement h\u00e2tif des arbres jusqu&rsquo;\u00e0 deux semaines plus t\u00f4t qu&rsquo;\u00e0 l&rsquo;habitude. Cependant, une vague de froid intense caus\u00e9e par l&rsquo;instabilit\u00e9 du vortex polaire s&rsquo;est abattue sur le Qu\u00e9bec \u00e0 la fin mai 2021, entra\u00eenant un important gel des pousses annuelles dans les jeunes plantations d&rsquo;\u00e9pinette blanche, et l\u2019annulation de la croissance de 2021. L&rsquo;\u00e9tude de jeunes plantations comparatives de diff\u00e9rentes provenances de graines a permis de d\u00e9couvrir qu&rsquo;il n&rsquo;y avait pas de variation g\u00e9n\u00e9tique significative quant \u00e0 la r\u00e9sistance \u00e0 de telles gel\u00e9es tardives s\u00e9v\u00e8res. Les chercheurs vont suivre la reprise de croissance en 2022 pour v\u00e9rifier si une variation g\u00e9n\u00e9tique significative existe et si cela est reli\u00e9 \u00e0 la vigueur ant\u00e9c\u00e9dente des arbres. <a rel=\"noreferrer noopener\" href=\"https:\/\/www.frontiersin.org\/articles\/10.3389\/fpls.2022.920852\/full\" target=\"_blank\">Lien vers la publication compl\u00e8te ici<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans le contexte des changements climatiques, un article vient d&rsquo;\u00eatre publi\u00e9 par les chercheurs de la Chaire sur la m\u00e9sadaptation des arbres face aux stress climatiques s\u00e9v\u00e8res entra\u00een\u00e9s par l&rsquo;instabilit\u00e9 grandissante du climat. Le printemps 2021 a \u00e9t\u00e9 exceptionnellement chaud &hellip; <a href=\"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/?p=5679\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[18],"tags":[],"class_list":["post-5679","post","type-post","status-publish","format-standard","hentry","category-actualites"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p3LOEb-1tB","_links":{"self":[{"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=\/wp\/v2\/posts\/5679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5679"}],"version-history":[{"count":2,"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=\/wp\/v2\/posts\/5679\/revisions"}],"predecessor-version":[{"id":5694,"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=\/wp\/v2\/posts\/5679\/revisions\/5694"}],"wp:attachment":[{"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.genomiqueforestiere.chaire.ulaval.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}