三角花品种越冬抗寒性比较研究

Study on cold hardiness of Bougainvillea ssp.during the overwintering in Shanghai

对引进上海的三角花4个品种进行越冬冻害观察结果表明,各品种在相同的小环境条件下(风口露地与背风向阳露地)其冻害加重进程不一致;在不同栽培设施下,各品种间抗寒性差异明显;结合相关生理指标测定表明,光叶类三角花较毛叶类三角花品种抗寒,其品种的抗寒性顺序为亮叶三角梅>艳紫三角梅>红色三角梅>斑叶三角梅。

The cold hardiness of 4 Bougainvillea ssp.varieties during the overwintering in Shanghai was studied in this paper.The cold injury course is different even on the same place.By comparison of overwintering-index and electric conductivity,the difference in cold hardiness was determined.The order from strong hardiness to weak is Bougainvillea glabra,Bougainvillea glabra cv.sanderiana,Bougainvillea spectabilis cv.crimson Lake.and Bougainvillea spectabilis cv.variegata.