A low cost apparatus for measuring the xylem hydraulic conductance in plants

Bragantia

Luciano Pereira¹  Paulo Mazzafera¹ 

[1],Universidade Estadual de Campinas Instituto de Biologia Departamento de Biologia VegetalCampinas SP ,Brasil

关键词: water;    conductivity;    cavitation;    embolism;    água;    condutividade;    cavitação;    embolia;   

DOI  :  10.1590/S0006-87052013005000006

来源: SciELO

【 摘 要 】

Plant yield and resistance to drought are directly related to the efficiency of the xylem hydraulic conductance and the ability of this system to avoid interrupting the flow of water. In this paper we described in detail the assembling of an apparatus proposed by TYREE et al. (2002), and its calibration, as well as low cost adaptations that make the equipment accessible for everyone working in this research area. The apparatus allows measuring the conductance in parts of roots or shoots (root ramifications or branches), or in the whole system, in the case of small plants or seedlings. The apparatus can also be used to measure the reduction of conductance by embolism of the xylem vessels. Data on the hydraulic conductance of eucalyptus seedlings obtained here and other reports in the literature confirm the applicability of the apparatus in physiological studies on the relationship between productivity and water stress.

【 授权许可】

CC BY   
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