干旱区生态环境知识资源中心(Arid): 一年生构树幼苗对水分胁迫的生理响应

Arid

	一年生构树幼苗对水分胁迫的生理响应
其他题名	Physiological Response of One-year-old Broussonetia Papyri fera Seedlings to Water Stress
	魏媛 1; 喻理飞 2
来源期刊	西北林学院学报
ISSN	1001-7461
出版年	2010
卷号	25 期号:4 页码:40-44
中文摘要	采用人工模拟水分胁迫方法, 对喀斯特地区la生构树苗木的生态耐旱适应性进行了研究.结果表明: 随着水分胁迫加剧, 构树幼苗叶质膜相对透性上升、丙二醛含量、游离脯氨酸含量增加; 叶绿素含量、硝酸还原酶活性、根系活力下降; 过氧化物酶活性呈"先上升后下降"的趋势.实验结果表明构树在一定的水分胁迫下能够主动调整其生理代谢, 通过合成有机溶质以提高适应能力而忍受逆境, 揭示喀斯特森林树种构树具有的一定生态耐旱生产潜力, 对水分亏缺的适应能力也较强, 可作为退化喀斯特石漠化地区造林的先锋树种
英文摘要	By means of the artificial simulation method of water stress, the adaptability of ecological drought tolerance of one-year-old Broussonetia papyri fera seedlings was studied in Karst area. The results showed that with the aggravation of water stress, the permeability of membrane, the MDA and free praline accumulation of the seedlings increased, while chlorophyll content, root energy activity of NR decreased, and the POD activity increased firstly, then decreased. The experiments indicated that’B. patryri f era could avoid the injury of water stress by composing organic solutes to improve the ability to fit stress circumstance, which revealed the B. pa pyri fera of in Karst area had potential productivity of ecological drought tolerance and strong adaptability to water deficiency. It can be used as pioneer species of reforestation in degraded karst rocky desertification area
中文关键词	构树幼苗 ; 水分胁迫 ; 生理抗旱 ; 生态适应性
英文关键词	Broussonetia papyri f era seedling physiological drought tolerance water stress ecological adaptability
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:3936120
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225755
作者单位	1.贵州财经学院资源与环境管理学院, 贵阳, 贵州 550004, 中国; 2.贵州大学林学院, 贵阳, 贵州 550025, 中国
推荐引用方式 GB/T 7714	魏媛,喻理飞. 一年生构树幼苗对水分胁迫的生理响应[J],2010,25(4):40-44.
APA	魏媛,&喻理飞.(2010).一年生构树幼苗对水分胁迫的生理响应.西北林学院学报,25(4),40-44.
MLA	魏媛,et al."一年生构树幼苗对水分胁迫的生理响应".西北林学院学报 25.4(2010):40-44.