Hydraulic Lift in Plant Root System and Soil Water Potential Study on Mechanism of Hydraulic Lift in Root System of Alfalfa and Maize Ⅲ

doi:10.11733/j.issn.1007-0435.2008.01.003

›› 2008, Vol. 16 ›› Issue (1): 11-16.DOI: 10.11733/j.issn.1007-0435.2008.01.003

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Hydraulic Lift in Plant Root System and Soil Water Potential Study on Mechanism of Hydraulic Lift in Root System of Alfalfa and Maize Ⅲ

LI Wei¹, HU Zi-zhi², WAN Chang-gui³, LI Sheng¹, SUN Xu-wu⁴

1. College of Life Science and Technology, Gansu Agriculture University, Lanzhou, Gansu, 730070, China;
2. Pratacultural College, Gansu Agriculture University, Lanzhou, Gansu, 730070, China;
3. Department of Range, Wildlife and Fisheries, Texas Tech University, Lubbock, TX, 79409, USA;
4. College of Life Science, Lanzhou University, Lanzhou, 730000, China

Received:2007-01-25 Revised:2007-07-17 Online:2008-02-15 Published:2008-02-15

苜蓿、玉米根系提水作用与土壤水势—-植物根系提水作用机理研究3

李唯¹, 胡自治², 万长贵³, 李胜¹, 孙旭武⁴

1. 甘肃农业大学生命科学技术学院, 兰州, 730070;
2. 甘肃农业大学草业学院, 兰州, 730070;
3. 美国德克萨斯技术大学, 德克萨斯州, TX79409, 美国;
4. 兰州大学生命科学学院, 兰州, 730000

作者简介:李唯(1955- ),男,甘肃省成县人,教授,主要从事作物生态生理研究,E-mail:liwei@gsau.edu.cn
基金资助:
甘肃省人事厅“333创新人才工程”专项资助(035-036080)

Abstract

Abstract: The hydraulic lift by root system at night was investigated on 1-year old alfalfa,a high-yield maize variety Zhongdan No.2,and a drought-resistant maize variety Yuyu No.22.The water potential difference between the shallow and deep soil was measured with neutron probe 503 DR.The results indicate that the water potential of the top soil was between-0.640 to-1.520 MPa for 1-year old alfalfa,-0.359 to-1.327 MPa for Zhongdan No.2,and-0.502 to-1.429 MPa for Yuyu No.22,respectively;Yuyu No.22 was lower than Zhongdan No.2 and higher than alfalfa.The average water potential difference between the shallow and deep soil was 0.620 MPa for 1-year old alfalfa,0.431 MPa for Zhongdan No.2,and 0.531 MPa for Yuyu No.22;Yuyu No.22 was higher than alfalfa and lower than Zhongdan No.2.The hydraulic lift capacity was enhanced by lower water potential in the shallow soil and larger water potential difference between the shallow and deep soil layers.At such soil conditions,plant has stronger water keep capacity in its root cells and relative weaker hydraulic lift.

Key words: Hydraulic lift in root system, Water potential, Water potential difference, Drought-resistance

摘要： 为揭示植物根系提水作用发生的机制,利用503DR型中子水分仪对1龄苜蓿、中单2号和豫玉22号玉米夜间发生根系提水作用时浅、深层土壤水势进行成对测定分析。结果显示:1龄苜蓿夜间总根系提水作用发生时的浅层土壤水势在-0.640-1.520 MPa,中单2号在-0.359-1.327 MPa,而豫玉22号玉米则在-0.502-1.429 MPa,其高低顺序为:中单2号>豫玉22号>1龄苜蓿;出现根系提水作用时的浅、深层土壤水势差,1龄苜蓿平均为0.620 MPa,中单2号和豫玉22号玉米分别平均为0.431和0.531 MPa,其高低顺序为1龄苜蓿>豫玉22号>中单2号;较低的浅层土壤水势和较大的浅、深层土壤水势差促进植物根系的提水作用。但在较低的浅层土壤水势和较大的浅、深层土壤水势差情况下才出现根系提水作用的植物,其根细胞具有较强的保水能力和相对较小的根系提水作用。

关键词: 根系提水作用, 水势, 水势差, 抗旱性

CLC Number:

S311

LI Wei, HU Zi-zhi, WAN Chang-gui, LI Sheng, SUN Xu-wu. Hydraulic Lift in Plant Root System and Soil Water Potential Study on Mechanism of Hydraulic Lift in Root System of Alfalfa and Maize Ⅲ[J]. , 2008, 16(1): 11-16.

李唯, 胡自治, 万长贵, 李胜, 孙旭武. 苜蓿、玉米根系提水作用与土壤水势—-植物根系提水作用机理研究3[J]. , 2008, 16(1): 11-16.

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References

[1] Jensen R D,Taylor S A,Wiebe H H.Negative transport and resistance to water flow through plant[J]. Plant Physiol.,1961,36:633-638
[2] 旭许旦,诸涵素.植物根部的水分倒流现象[J]. 植物生理学通讯,1995,31(4):241-245
[3] 管秀娟,赵世伟.植物根水倒流的证据及意义[J]. 西北植物学报,1999,19(4):746-754
[4] Wan C G,Xu W,Sosebee R E.Hydraulic lift in drought-tolerant and susceptible maize hybrids[J]. Plant and Soil,2000,219:117-126
[5] 李唯,倪郁,李尚忠,等.苜蓿、玉米根系提水作用测定的影响因素[J]. 甘肃农业大学学报,2008,43(1):52-56
[6] 李唯,胡自治,倪郁,等.苜蓿、玉米根系提水作用与耐旱性的关系-植物根系提水作用理机研究Ⅱ[J]. 草地学报,2007,15(6):515-518
[7] Baker J M,Van Bavel C H M.Water transfer through cotton plants connecting soil regions of differing water potential[J]. Agron.J.,1988,80:993-997
[8] Corak S T,Blevin D G,Pallardy S G.Water transfer in an alfalfa/maize association,survival of maize draught[J]. Plant Physiol.,1987,84:582-586
[9] Richards J H,Caldwell M M.Hydraulic lift:substantial nocturnal water transport between soil layers by Aryemisla tridentata roots[J]. Oecologia,1987,73:486-489
[10] Veterlein D,Marschner H,Hom R.Microtensiometer technique for in situ measurement of soil matric potential and root water extraction from a sandy soil[J]. Plant and Soil,1993,149(2):263-274
[11] Veterlein D,Marschner H.Use of microtensiometer technique to study hydraulic lift in a sandy soil planted with pearl miller[J]. Plant and Soil,1993,149:275-282
[12] 赵多长.玉米杂交种豫玉22引种实验结果[J]. 甘肃农业科技,2000(2):21-22
[13] 李可夫,李晓丽,庞占琴.玉米新品种豫玉22特征特性及高产栽培技术[J]. 甘肃农业科技,2001(12):9-10
[14] Baker J M,Van Bavel C H M.Resistance of plant roots to water loss[J]. Agron.J.,1986,78:641-644
[15] Molz F J,Perterson C M.Water transport from root to soil[J]. Agron J,1976,62:901-904
[16] Dirksen C,Raats P A.Water uptake and release by alfalfa roots[J]. Agron.J.,1985,77,621-626
[17] Nobel P S,Sanderson J.Rectifier-like activities of roots of two desert succulents[J]. Exp.Bot.,1984,35:727-732
[18] Nobel P S,Cui M.Shrinkage of attached roots of Opuntia ficus-indica in response to lowered water potentials-predicted consequences for water uptake or loss to soil[J]. Ann.Bot.,1992,70,485-491
[19] North G B,Nobel P S.Drought -induced changes in Hydraulic Conductivity and structure in roots of Ferocactus acamthodes and Opuntia ficus-indics[J]. New Phytol.,1991,120:9-19
[20] North G B,Nobel P S.Hydraulic conductivity of concentric root tissues of Agave deserti Engelm.under wet and drying conditions[J]. New Phytol.,1995,30:47-57
[21] Shone M G T,Clarkson D T.Rectification of radial water flow in the hypodermis of nodal roots of Zea mays[J]. Plant Soil,1988,111:223-229

Hydraulic Lift in Plant Root System and Soil Water Potential Study on Mechanism of Hydraulic Lift in Root System of Alfalfa and Maize Ⅲ

苜蓿、玉米根系提水作用与土壤水势—-植物根系提水作用机理研究3

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