干旱胁迫下俄罗斯大果沙棘苗期生理生态特性的研究  

Study on the Physiological and Ecological Characteristics of Hippophae rhamnoides L.Seedlings under Drought Stress

作　　者：崔大练[1] 王书臻[2] 马玉心[1] 

机构地区：[1]浙江海洋学院海洋科学学院,浙江舟山316000 [2]牡丹江师范学院,黑龙江牡丹江517000

出　　处：《北方园艺》2010年第16期15-19,共5页Northern Horticulture

基　　金：黑龙江教育厅指导资助项目(10553107)

摘　　要：通过盆栽试验,研究了干旱胁迫下俄罗斯大果沙棘幼苗叶片生理生化指标和生态指标的变化。结果表明:轻度、中度、重度胁迫条件下可溶性蛋白质、脯氨酸含量、束缚水/自由水比值高于对照,而且随着胁迫时间的延长而增高;重度胁迫下可溶性蛋白质、脯氨酸含量、可溶性糖含量、束缚水/自由水比值与轻度、中度差异显著,轻度、中度胁迫条件下各指标差异不显著。随着干旱胁迫时间的延长、胁迫强度的加剧,其株高和地径减小,叶面积也逐渐减小。干旱胁迫对植株的生长有明显的抑制作用。Changes in some physiological biochemical indexes of seeding leaves long-term different drought stress was studied by using pot culture 2-year-old seeding as experiment material and adopting the method of weighing the soil to control the water content.The results showed that in the whole drought stress period Light stress（LS）,Medium stress,（MS）and Severe stress（SS）had higher the content of proline,soluble protein,soluble sugar and bound water/free water than that of Control（CK）and increased with the extension of stress time.The content of proline,soluble protein and soluble sugar in SS had obviously differences with LS,MS and that those had no different in LS and MS.The stem height and the stem basal diameter were all decreased with increasing drought stress.The leaf area of leaves were all decreased with increasing drought stress and extension of time for drought stress.In drought stress had definite inhibiting effect the seedlings growth.

关 键 词：俄罗斯大果沙棘 干旱胁迫 幼苗 生理指标 生长生态指标 

分 类 号：S793.6[农业科学—林木遗传育种]