【摘要】 为比较藤本月季的抗寒性,于早春对红梅朗、多特蒙特、鸡尾酒、瓦特大叔和金秀娃1年生枝条进行了-10℃-、20℃-、30℃的冷冻试验、结果表明,随着冷冻处理温度的降低,5种苗木枝条失水速率和原生质膜透性增加,冷冻枝条的恢复生长能力下降;红梅朗、多特蒙特和鸡尾酒3者的半致死温度(LT50)均为-30℃,瓦特大叔和金秀娃的半致死温度(LT50)约为-20℃;5种藤本月季品种中红梅朗抗寒性最强,金秀娃抗寒性最差,其抗寒性顺序为:红梅朗>多特蒙特>鸡尾酒>瓦特大叔>金秀娃。更多还原

【Abstract】 The experiments on freezing resistance of fire rose varieties were carried out in early spring.The results are as follows: with the temperature of freezing declined,the water evaporation rate and the permeability in five freezed seedling sticks enhanced and the rate of survival stick decreased;the temperature of LT₅0 in Meidiland and Dortmud and Cocktail tissue-30℃,in Uncle Water and Golden Showers tissue-20℃.Among five breeds,the freezing resistance of Meidiland seedlings was the strongest,and Golden Showers seedlings was the weakest.The sequence of freezing resistance of five climbing rose varieties were Meidiland>Dortmud>Cocktail>Uncle Water>Golden Showers.更多还原