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.
Q.-Y. Gao, J. Wang, Y. Ma and Y.-H. Zhang, “Relationship of Variation of Organic Matters and Winterhardiness of Blackcurrant,” Journal of Northeast Agricultural University, Vol. 28, No. 3, 1997, pp. 238-242.
S.-H. Guo, Q. Yang, X.-L. Yang, Y.-F. Liu, J.-C. Qi and Y.-M. Bi, “Effects of Salicylic Acid on Cold Resistance during Flowering Period and Fruit Sitting Rate in Apricot,” Nordwood Forest Research, Vol. 25, No. 4, 2007, pp. 24-27.
X.-F. He, T.-X. Yang and A.-Z. Wei, “Changes of Physiological Indexes of Zanthoxylum bungeanum Related to Cold Resistance during Natural Overwintering,” Journal of Northeast Forestry University, Vol. 37, No. 5, 2009 pp. 67-69.
C.-N. Li, F.-X. Dong, R.-Q. Zhang, G. X. Wang and L. S. Liang, “Research Progress in the Study of Shoot Shriveling in Fruit Trees” Chinese Agricultural Science Bulletin, Vol. 26, No. 3, 2010, pp. 138-141.
W.-H. Xu, L.-L. Wang and Z.-G. Wang, “Effects of low Temperature on Physiological and Biochemical Characteristics of Pepper Seedlings,” Journal of Gansu Agricultural University, Vol. 40, No. 4, 2005, pp.475-479.
F. Zhang and B.-R. Wang, “Efects of Diffent Protectants on Preventing Shoots from Shriveling onYoung Apple Tree When Overwintering,” Journal of Beijing Forestry University, Vol. 20, No. 1, 1998, pp. 89-92.
C.-L. Xiao, Y.-K. Wang, C.-Y. He, Y.-Z. Li and G.-Z. Zhang, “Studies on the Relationship between the Changes of Mian Physiological Indices and Cold-Resistance in the New Shoots of Dahongpao Zanthoxylum bungeanum under Low Temperature Stress,” Journal of Anhui Agricultural Sciences, Vol. 36, No. 10, 2008, pp. 3975-3977.
B.-Y. Zhou, L.-F. Liang, H.-B. Huang and Z.-H. Wang, “Effects of Low Temperature and Paclobutrazol on Superoxide Dismutase and Abscisic Acid of Bananas (Musa spp.),” Acta Horticulturae Sinica, Vol. 2, No. 4, 1995, pp. 31-33.