Survival and growth ofPicea glaucaseedlings as a function of freezing temperatures and exposure times during budbreak and shoot elongation

Autor:	Carole Coursolle, Francine J. Bigras, Hank A. Margolis
Rok vydání:	2004
Předmět:	040101 forestry 010504 meteorology & atmospheric sciences Bud fungi Forestry 04 agricultural and veterinary sciences Biology biology.organism_classification 01 natural sciences Horticulture Dry weight Seedling Botany Shoot 0401 agriculture forestry and fisheries Frost (temperature) Elongation 0105 earth and related environmental sciences
Zdroj:	Scandinavian Journal of Forest Research. 19:206-216
ISSN:	1651-1891 0282-7581
DOI:	10.1080/02827580410024115a
Popis:	The impact of freezing temperatures and exposure times during budbreak and shoot elongation on 10-month-old containerized white spruce seedlings [Picea glauca (Moench) Voss] was studied. Seedlings were exposed to 0, - 2, - 4, - 6, - 8 and - 10°C for 0, 1, 2, 3, 4, 5 and 6 h at four stages of budbreak and shoot elongation (stage 1: unswollen bud; stage 2: swollen bud; stage 3: bud scales parted by emerging needles; stage 4: 1-5 cm of terminal shoot growth). Seedling and terminal bud survival, viability of first-year needles (developed before frost exposure), terminal shoot length, stem diameter and aerial dry mass were measured 90 days after freezing exposure. Frost severity had a much greater influence on seedling survival, damage and subsequent growth than exposure time. The bud development stage at which freezing temperatures were applied also affected survival and subsequent growth.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::594716a0027b5b86c166052f2877a595 https://doi.org/10.1080/02827580410024115a Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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