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Comparison and Evaluation on Cold-tolerance of Fourteen Cut Rose Cultivars
LIU Feng, LI Hao, WANG An, FU Zi-yang, XIAO Li-zhan, ZHANG Gui-ling, WEN Si-min
HUBEI AGRICULTURAL SCIENCES
2018, 57 (7):
75-79.
DOI: 10.14088/j.cnki.issn0439-8114.2018.07.017
Low temperature stress resistance of 14 cut rose cultivars were studied to provide references for cultivation and cold tolerance breeding in winter. The MDA content,soluble sugar content,soluble protein content,proline content,POD activity and SOD activity of annual cuttings were measured at low temperature of 5,0,-5,-10 ℃,on this basis,the membership function method was used to calculate the membership function value,and the system clustering analysis was carried out according to the value of the comprehensive membership function. The results showed that the difference of cold resistance of cut rose cultivars was obviously,the cold tolerance ability from high to low were followed by Movie Star,Tineke,Blue Moon,Rouge Meilland,Carola,John F. Kennedy,Blue Parfum,Huan zhu, Pfalzer Gold,Golden Scepter,White Christmas,Gold Medal,Kardinal and Diana. Using cluster analysis,14 cultivars were divided into three grades：low temperature tolerance of Movie star was the strongest,those of Gold Medal,Kardinal and Diana were the weakest,and the other 10 varieties were medium.
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