摘要
在水分胁迫条件下,以紫丁香、小叶锦鸡儿和乌苏里绣线菊2年生苗木为材料,叶面喷施不同浓度水杨酸。试验发现,水杨酸(SA)能有效降低水分胁迫条件下各树种叶片MDA含量,延缓可溶性蛋白质和叶绿素含量的下降。对各处理进行了抗旱性综合鉴定,证明了水杨酸预处理在灌木树种抵御干旱方面作用明显。7.0×10-5mol/L的SA既能显著提高丁香、小叶锦鸡儿和乌苏里绣线菊的水分利用效率,又能显著提高它们的抗旱能力。
The effects of different concentrations of salicylic acid(SA) on drought resistance of Syringa oblata, Caragana microphylla and Spiraea chamaedryfolia seedlings under water stress were studied. The results showed that salicylic acid, as the free radical scavenger, could decrease the level of MDA content and retard the decrease of chlorophyll and soluble protein content in shrub plants under drought stress. On comprehensive judgment of drought resistance ability of the shrub different treatments,it suggested that SA played an important role in improving drought resistance of shrub seedlings. Drought resistance and water use efficiency of Syringa oblata,Caragana microphylla and Spiraea chamaedryfolia treated with Salicylic Acid of 7.0×10^(-5)mol/L could be increased obviously.
出处
《水土保持学报》
CSCD
北大核心
2004年第2期166-169,185,共5页
Journal of Soil and Water Conservation
基金
哈尔滨市科学研究基金项目(2002AFQXT007)资助
