Using 28 spray cut chrysanthemum varieties as experimental materials,through the measurement and scoring of 15 agronomic traits,and assigning 64 points as the threshold value for variety selection,18 cold-resistant excellent spray cut chrysanthemum varieties were screened.These varieties exhibited short or relatively short photoperiodic response cycles and growth periods.They were able to normally form and develop flower buds when exposed to the lowest daily temperature of 8℃during the bud differentiation phase,and the quality of the cut flowers meet market demands.The research results can provide references for the selection of varieties for winter spray cut chrysanthemum facility cultivation and the breeding of tissue culture seedlings.
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