{"id":82302,"date":"2019-01-30T12:14:32","date_gmt":"2019-01-30T17:14:32","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/frost-tolerance-picea-glauca-irrigation\/"},"modified":"2019-01-30T12:14:32","modified_gmt":"2019-01-30T17:14:32","slug":"frost-tolerance-picea-glauca-irrigation","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/frost-tolerance-picea-glauca-irrigation\/","title":{"rendered":"Frost tolerance of two-year-old Picea glauca seedlings grown under different irrigation regimes in a forest nursery"},"content":{"rendered":"\n<p>Published in <strong>Scandinavian Journal of Forest Research 23: 137-147. <a href=\"https:\/\/doi.org\/10.1080\/02827580801968486\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.1080\/02827580801968486<\/a><\/strong><\/p>\n<p>This study examined the impact of increased irrigation efficiency on the hardening and frost tolerance of 2-year-old containerized white spruce seedlings in the context of groundwater protection, irrigation management and the maintenance of seedling quality in northern climates. The seedlings were grown under three different irrigation regimes (IR = 30%, 40% and 55% v\/v; cm<sup>3<\/sup> H<sub>2<\/sub>O\/cm<sup>3<\/sup> substrate) and were hardened under conditions of natural photoperiod and temperature. After being subjected to artificial frost tests on four sampling dates during autumn, the seedlings were compared for bud development and frost tolerance. IR had no influence on frost tolerance as determined by measurements of physiological (electrolyte leakage, root water loss) and morphological (shoot damage, root initiation) variables. At the end of the second growing season, there was no significant difference between IRs in seedling height, root collar diameter, shoot dry mass and root dry mass. The results indicate that the amount of water applied to large-dimension 2-year-old white spruce seedlings during the growing season can be significantly decreased without prematurely impeding their growth or hindering their acquisition of frost tolerance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in Scandinavian Journal of Forest Research 23: 137-147. https:\/\/doi.org\/10.1080\/02827580801968486 This study examined the impact of increased irrigation efficiency on the hardening and frost tolerance of 2-year-old containerized white spruce seedlings in the context of groundwater protection, irrigation management and the maintenance of seedling quality in northern climates. The seedlings were grown under three different [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1180,1181,1187],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1093],"class_list":["post-82302","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-forestry-research","cptt_theme-forests","cptt_theme-seeds-and-forest-seedlings-production","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-m-lamhamedi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Frost tolerance of two-year-old Picea glauca seedlings grown under different irrigation regimes in a forest nursery - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"Study on the impact of increased irrigation efficiency on hardening and frost tolerance of 2-year-old containerized white spruce seedlings.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/frost-tolerance-picea-glauca-irrigation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Frost tolerance of two-year-old Picea glauca seedlings grown under different irrigation regimes in a forest nursery - 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