不同抗旱性结缕草品种在土壤干旱及复水过程中的生理差异  

Differences of physiological response between two Zoysia varieties with different drought resistance ability during soil drought stress and rehabilitation

作　　者：赵艳[1] 孙吉雄[1] 王兆龙[2] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070 [2]上海交通大学农业与生物学院,上海201101

出　　处：《草原与草坪》2006年第6期46-48,共3页Grassland and Turf

基　　金：上海市基础研究计划重点项目(03JC14047);上海市科委西部开发项目(043158056)

摘　　要：通过对结缕草的2个品种(抗旱性强的兰引3号和抗旱性弱的马尼拉)在土壤干旱及复水过程中的几项生理指标(游离脯氨酸、相对电导率、超氧化物歧化酶)的测定和对这些生理指标的变化规律的分析发现:兰引3号耐旱性强,干旱条件下草坪质量较高,叶片水势较大;干旱胁迫下抗旱性相对较弱的马尼拉叶片游离脯氨酸含量及相对电导率增加幅度较大;胁迫期间2品种超氧化物歧化酶活性均先升后降,兰引3号超氧化物歧化酶高峰期出现早且含量高;复水后2个品种恢复程度不同,兰引3号由于复水前持续干旱没有造成严重伤害,所以游离脯氨酸、相对电导率恢复快,而马尼拉各项指标恢复较慢。The physiological parameters including Pro,REC,SOD in leaf were test with two Zoysia grasses, the drought-tolerant variety（Zoysia japonica cv. Lanyin No. 3）and drought-sensitive variety （Zoysia matrella） under the treatments of drought stress and then re-watering. The results showed that：Lanyin No. 3 showed better performance,its turf quality and leaf water potential were higher under drought condition. Zoysia matrella showed the greater increase on REC and Pro. The SOD maximum peakvalue of Lanyin No. 3 occurred earlier and kept the higher activity. After re-watering,Lanyin No, 3 was rehabilitated more rapidly than Zoysia matrella.

关 键 词：干旱胁迫 结缕草 复水 生理反应 

分 类 号：Q945.78[生物学—植物学] S688.4[农业科学—观赏园艺]