摘要
为探明长柱十大功劳植物在喀斯特石漠化地区进行生态恢复种植的可行性,以长柱十大功劳2年实生幼苗为试验材料,采用盆栽试验研究不同干旱胁迫强度[土壤相对含水量为(20±2.5)%^(80±2.5)%]和胁迫时间(0~21d)对其幼苗生长的影响。结果表明:随着干旱胁迫强度的增加和胁迫时间的延长,长柱十大功劳叶片的相对含水量、叶绿素含量均呈下降趋势;轻度胁迫和中度胁迫叶片的脯氨酸含量呈升高趋势,而重度胁迫叶片的脯氨酸含量呈先升高后降低趋势;在不同干旱胁迫条件下,叶片的可溶性蛋白含量、SOD活性呈先升高后降低趋势,MDA含量呈升高趋势。长柱十大功劳对水分胁迫具有较强适应性,表现出一定耐旱潜力,可作为喀斯特石漠化地区生态恢复植物进行栽培。
Mahonia duclouxiana seedlings with two years old are cultivated in pots under different drought stress [（20±2.5）%-（80±2.5）% soil relative moisture content] for 0-21 d to study the effect on growth of M. duclouxiana seedlings and to discuss the feasibility of M. duclouxiana cultivation for ecological restoration in karst stony desertification area. Results： The relative moisture and chlorophyll content of M. duclouxiana leaves presents a declining trend with increase of drought stress intensity and stress time. The proline content in M. duclouxiana leaves shows a rising trend under the mild and moderate drought stress but a first rising and then declining trend under the severe drought stress. The soluble protein content and SOD activity of M. duclouxiana leaves presents a first rising and then declining trend but MDA content of M. duclouxiana leaves shows a rising trend under different drought stress. M. duclouxiana with a certain drought tolerance potential and strong adaptability to drought stress can be cultivated in karst stony desertification area for its ecological restoration.
出处
《贵州农业科学》
CAS
2017年第3期28-32,共5页
Guizhou Agricultural Sciences
基金
广西科学研究与技术开发计划项目"十大功劳良种繁殖研究"(桂科重14124002-4)
关键词
长柱十大功劳
喀斯特地区
干旱胁迫
生理响应
Mahonia duclouxiana
karst area
drought stress
physiological response
作者简介
龙杰超（1961-），男，主管药师，从事药用植物栽培研究。Email：10ng25299@163．com
何开家（1956-），男，主任药师，从事中药质量控制与评价研究。Email：gxzyyyiyhkj@163．com
