摘要
在干旱条件下，对红花、大叶白花、中叶白花、小叶白花４种变异类型的欧李进行了１０项生理指标的测定，利用主成分分析法对抗旱性进行评定。结果表明，欧李的抗旱性受多因子影响，在二维主成分坐标上，４种变异类型的欧李抗旱性可分为３类，红花欧李抗旱性较强，大叶白花欧李抗旱性较弱，小叶白花和中叶白花欧李抗旱性介于上述二者之间。抗旱性从强到弱的排序为：红花欧李、小叶白花欧李、中叶白花欧李，大叶白花欧李。
There are four dissimilating types of Prunus huznilis:red flowered,big-ger leaf- white flowered, mid leaf- white flowered,smaller leaf- white flowered.Thephysiological data of the four types were determined under drought stress.Drought re-sistance was evaluated by the principal componeiit analysis method.The results indicatedthat the drought resistance was affected by many factors and the factors can be classifiedinto 3 types.The ability of combating drought for the four types was put into order:redflowered,smaller leaf- white flowered, mid leaf- white flowered, bigger leaf- whiteflowered.
基金
内蒙古科委项目
关键词
欧李
主成分分析
抗旱性
Prunus humilis, principal coniponent analys is, drought resistance
