摘要
采用Logistic法研究了千佛手、虹之玉、新玉缀、八千代4种多肉植物的耐寒性。结果表明:在人工低温处理下,4种多肉植物的电导率呈“S”型曲线变化,根据Logistic方程计算出千佛手、虹之玉、新玉缀、八千代的半致死温度分别为-10.17、-15.29、-10.22、-12.45℃。通过冬季室外自然低温处理验证,4种多肉植物的耐寒性表现与Logistic法所得结果一致,抗寒能力由强到弱依次为虹之玉>八千代>新玉缀>千佛手。
In our study,Logistic method was used to estimate low temperature tolerances of four Crassulaceae succulent species(Sedum sediforme,Sedum rubrotinctum Clausen,Sedum morganianum var.burrito,Sedum corynephyllum).Artificial low temperature trail showed that the electricity conductivity(EC)of 4 succulent species followed“S”curve.Derived from the logistic equation,semi-lethal temperature of Sedum sediforme,Sedum rubrotinctum Clausen,Sedum morganianum var.burrito and Sedum corynephyllum was-10.17℃,-15.29℃,-10.22℃,and-12.45℃,respectively.Natural low temperature trial was further conducted outside in winter;the morphological assay confirmed that the four succulent species’tolerance to low temperature was in accordance with the calculation result of the logistic method,i.e.Sedum rubrotinctum>Sedum corynephyllum>Sedum morganianum var.burrito>Sedum sediforme.
作者
马英
周妍哲
刘洋
李建安
MA Ying;ZHOU Yan-zhe;LIU Yang;LI Jian-an(Forestry College,Aromatic Plants Institute,Central South University of Forestry and Technology,Changsha 410004,PRC;Changsha Yixinyi Horticulture Company,Changsha 410100,PRC)
出处
《湖南农业科学》
2019年第8期37-41,共5页
Hunan Agricultural Sciences
基金
湖南省教育厅科学研究项目(16B278)
湖南省校企合作创新创业教育基地资助项目(201610)
作者简介
马英(1981-),女,辽宁锦州市人,讲师,主要从事多肉植物与香料植物的栽培育种工作;通讯作者:李建安。
