塔克拉玛干沙漠南缘3个沙拐枣种的抗旱特性比较
Comparison of drought resistance among three Calligonum in the Southern Fringe of the Taklamakan Desert
查看参考文献34篇
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文摘
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采用盆栽试验，研究了网状、心形和红皮沙拐枣在干旱胁迫和复水过程中的生理生态响应特征，并采用隶属函数法对3个沙拐枣种的抗旱性进行综合评价。结果表明，干旱胁迫下，红皮沙拐枣的相对含水量、水势和叶绿素含量均较高，但在复水后，恢复较慢。在干旱和中等灌溉处理下红皮沙拐枣的MDA含量最低，质膜损伤程度最轻，复水后恢复却较慢；在最高灌溉处理下，红皮沙拐枣的MDA含量却最高，复水后恢复也最快。干旱处理后3个沙拐枣种均有大量的渗透调节物质（脯氨酸和可溶性糖）累积，在最低灌溉量下为心形>红皮>网状沙拐枣，中等和最高灌溉处理下则为网状>心形>红皮沙拐枣，复水后降低幅度则为心形>红皮>网状沙拐枣。不同处理下心形沙拐枣的根冠比均显著高于其他种，网状沙拐枣相对较低。抗旱性综合评价结果为红皮>网状>心形沙拐枣。可见，各项测定指标的种间差异和综合评价结果并不完全一致，总体来看红皮沙拐枣对干旱胁迫的适应性最强，可优先推荐在当地种植。 |
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其他语种文摘
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The influence of drought stress and re-watering on the ecophysiological characteristics of Calligonum cancellatum, C. cordatum , and C. rubicundun was studied in a pot experiment under three irrigation treatments. The comprehensive drought resistance of the three Calligonum was compared with their subordinate function. Under water stress,relative water content, water potential, and chlorophyll content of assimilating branches were higher for C. rubicundun, but recovered more slowly after re-watering compared with those of other species. After water stress,the malondialdehyde (MDA) content was lower and recovered more slowly for C. rubicundun under drought and medium irrigation treatments, but was higher and recovered more quickly at high irrigation levels compared with other species. There was a large number of osmotic adjustment substances (soluble sugar and proline) accumulated in the assimilating branches of the three Calligonum under water stress. The contents of osmotic adjustment substances under drought treatment were in the following order: C. cordatum>C. rubicundun>C. cancellatum， but under medium and high irrigation treatments they were C. cancellatum>C. cordatum〉C. rubicundun. However, the contents of osmotic adjustment substances in C. cordatum decreased more significantly compared to other species after re-watering. In addition,C. cordatum had significantly higher root/shoot ratios than the other species. Based on the determined indexes under water stress,the comprehensive drought resistance was in the following order: C. rubicundun>C. cancel-latum>C. cordatum. Obviously, the difference of each ecophysiological parameter among species was not consistent with that of comprehensive evaluation. Overall,C. rubicundun can be introduced for shelterbelt construction because of its strong tolerance and adaptability to drought stress in the southern fringe of the Takli-makan Desert. |
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来源
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草业学报
,2014,23(3):136-143 【核心库】
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关键词
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沙拐枣
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灌溉量
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干旱胁迫
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复水
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抗旱性
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地址
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中国科学院新疆生态与地理研究所, 新疆, 乌鲁木齐, 830011
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1004-5759 |
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学科
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林业 |
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基金
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国家科技支撑计划项目
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中国科学院西部之光人才培养计划
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国家自然科学基金项目
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国家博士后面上基金
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文献收藏号
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CSCD:5177040
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参考文献 共
34
共2页
|
|
1.
潘伯荣. 沙漠圣女——沙拐枣.
生命世界,2010,6:30-33
|
被引
1
次
|
|
|
|
|
2.
毛祖美.
新疆植物志(第一卷),1993:265
|
被引
3
次
|
|
|
|
|
3.
李州. 不同叶型白三叶抗氧化保护及渗透调节生理对干旱胁迫的响应.
草业学报,2013,22(2):257-263
|
被引
41
次
|
|
|
|
|
4.
种培芳. 4个地理种群红砂的抗旱性综合评价.
草业学报,2011,20(5):26-33
|
被引
47
次
|
|
|
|
|
5.
刘建宁. 4份菊苣种质材料苗期抗旱性评价.
草业学报,2012,21(2):241-248
|
被引
13
次
|
|
|
|
|
6.
吴芹. 3个树种对不同程度土壤干旱的生理生化响应.
生态学报,2013,33(12):3648-3656
|
被引
33
次
|
|
|
|
|
7.
谢贤健. 三种野生岩生草本植物的抗旱性综合评价.
草业学报,2009,18(4):75-80
|
被引
27
次
|
|
|
|
|
8.
孟林. 不同居群马蔺抗旱性评价及生理指标变化分析.
草业学报,2009,18(5):18-24
|
被引
23
次
|
|
|
|
|
9.
曾凡江. 新疆策勒绿洲外围四种多年生植物的水分生理特征.
应用生态学报,2009,20(11):2632-2638
|
被引
15
次
|
|
|
|
|
10.
苏培玺. 荒漠植物梭梭和沙拐枣光合作用、蒸腾作用及水分利用效率特征.
西北植物学报,2003,23(1):11-17
|
被引
95
次
|
|
|
|
|
11.
李向义. 自然状况下头状沙拐枣对水分条件变化的响应.
植物生态学报,2003,27(4):516-521
|
被引
17
次
|
|
|
|
|
12.
刘镇. 塔克拉玛干沙漠南缘头状沙拐枣幼苗生长和生物量分配对不同灌溉量的响应.
中国沙漠,2012,32(6):1655-1661
|
被引
12
次
|
|
|
|
|
13.
宋聪. 不同水分条件对头状沙拐枣幼苗形态特征及生物量的影响.
生态学杂志,2012,31(9):2225-2233
|
被引
10
次
|
|
|
|
|
14.
俞乐. 干旱胁迫下结缕草叶片抗坏血酸与相关生理指标变化的品种差异研究.
草业学报,2013,22(4):106-115
|
被引
22
次
|
|
|
|
|
15.
刘爱荣. 盐胁迫对彩叶草生长和渗透调节物质积累的影响.
草业学报,2013,22(2):211-218
|
被引
38
次
|
|
|
|
|
16.
舒展. 叶绿素含量测定的简化.
植物生理学通讯,2010,46(4):399-402
|
被引
83
次
|
|
|
|
|
17.
李合生.
植物生理生化实验原理和技术,2000
|
被引
3560
次
|
|
|
|
|
18.
宋家壮. 水分胁迫及复水对虉草生理生化特性的影响.
草业学报,2012,21(2):62-69
|
被引
36
次
|
|
|
|
|
19.
杨有俊. 干旱及复水处理下坪用黑麦草和高羊茅抗旱特性比较.
草业科学,2012,29(3):370-376
|
被引
6
次
|
|
|
|
|
20.
陈敏. 细叶芒苗期耐旱性分析.
草业学报,2013,22(3):184-189
|
被引
13
次
|
|
|
|
|
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