Determination of water potential on mango trees by pressure chamber

被引：7

作者：

Neto, MTC ^{[1
]}

Reinhardt, DH ^{[1
]}

Ledo, CAD ^{[1
]}

机构：

[1] Embrapa Mandioca & Fruticultura, BR-44380000 Cruz das Almas, BA, Brazil

来源：

PROCEEDINGS OF THE SEVENTH INTERNATIONAL MANGO SYMPOSIUM | 2004年 / 645期

关键词：

Mangifera indica; water deficit; water stress; method; exudation; sap;

D O I：

10.17660/ActaHortic.2004.645.53

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The determination of water potential in mango trees, using a leaf petiole in a pressure chamber has not correctly expressed plant water potential, so several authors use stomatal resistance in mango water relation studies. The main problem of the leaf petiole method is that when pressure is applied exudation of the sap from the phloem masks the exudation of the watery sap from the xylem, thus misleading the reading point for the determination of water potential. The use of a small branch rather than a leaf petiole for determination of plant water potential has been suggested to adequately relates plant water potential to soil water potential.

引用

页码：425 / 427

页数：3

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