HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (15) Citing Articles via Google Scholar Google Scholar Articles by Dionne, J. Articles by Desjardins, Y. Search for Related Content PubMed Articles by Dionne, J. Articles by Desjardins, Y. Agricola Articles by Dionne, J. Articles by Desjardins, Y. Related Collections Temperature Stress Crop Physiology & Metabolism Turfgrass Crop Ecology

Freezing Tolerance and Carbohydrate Changes during Cold Acclimation of Green-Type Annual Bluegrass (Poa annua L.) Ecotypes

^a Centre de Recherche en Horticulture, Département de Phytologie, Université Laval, Sainte-Foy, Québec, Canada G1K 7P4
^b Soils and Crops Research and Development Centre, Agriculture and Agri-Food Canada, Sainte-Foy, Québec, Canada G1V 2J3

View larger version (23K): [in a new window]   Fig. 1. Freezing tolerance of three annual bluegrass ecotypes acclimated to the following conditions: nonhardened (NH); hardened 2 wk at 2°C (H2); hardened 2 wk at 2°C followed by 2 wk at -2°C (HF); hardened 4 wk at 2°C (H4). Freezing tolerance is expressed as 50% killing temperature (LT50)

View larger version (46K): [in a new window]   Fig. 2. Changes in carbohydrate composition in crowns of three annual bluegrass ecotypes cold acclimated to the following conditions: nonhardened (NH); hardened 2 wk at 2°C (H2); hardened 2 wk at 2°C followed by 2 wk at -2°C (HF); hardened 4 wk at 2°C (H4)

View larger version (30K): [in a new window]   Fig. 3. Daily average air and soil temperature in the unheated greenhouse during the winter of 1998–1999 near Québec City, Canada

View larger version (28K): [in a new window]   Fig. 4. Freezing tolerance (LT50) of three annual bluegrass ecotypes acclimated in an unheated greenhouse during the 1998 to 1999 winter season

View larger version (36K): [in a new window]   Fig. 5. Changes in carbohydrate composition in crowns of three annual bluegrass ecotypes cold-acclimated in an unheated greenhouse during winter 1998 to 1999