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Comparison of Different Cultivars of Blueberry Overwintering Ability in Qingdao of China
The Key Laboratory for Silviculture and Conservation, Beijing Forestry University, Beijing, China
The Key Laboratory for Silviculture and Conservation, Beijing Forestry University, Beijing, China
The Key Laboratory for Silviculture and Conservation, Beijing Forestry University, Beijing, China
The Key Laboratory for Silviculture and Conservation, Beijing Forestry University, Beijing, China
- 1 The Key Laboratory for Silviculture and Conservation, Beijing Forestry University, Beijing, China
- 2 The Key Laboratory for Silviculture and Conservation, Beijing Forestry University, Beijing, China
- 3 The Key Laboratory for Silviculture and Conservation, Beijing Forestry University, Beijing, China
- 4 The Key Laboratory for Silviculture and Conservation, Beijing Forestry University, Beijing, China
American Journal of Plant Sciences·Volume 03 (2012)·Pages 391–396·Published 19 March 2012·DOI10.4236/ajps.2012.33047
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Abstract
In order to select severe overwintering abilitied blueberry cultivars for cold resistance of annual branches, promoting breeding high quality cultivars, a study had been conducted into field-planting shoots overwintering ability and the relative conductivity, MDA content, SOD of 7 different kinds of blueberries under artificial cooling process. According to survey results, under field conditions, Different cultivars of blueberries showed significantly difference, ranging from 56.67% of Bluegold to 12.80% of Darrow. With the temperature decreasing, changes of relative conductivity, MDA content and SOD in annual branches had a strong regularity and the hardiness of these cultivars is: Northland > Chippewa > Coville > Bluecroup > Darrow > Bluegold > Powderblue.
KeywordsBlueberryCultivarsOverwintering AbilityAnnual Branch
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