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Estimation of whole-plant transpiration of bananas using sap flow measurements

Lu, Ping, Woo, K. C. and Liu, Zhutian T. (2002). Estimation of whole-plant transpiration of bananas using sap flow measurements. Journal of Experimental Botany,53(375):1771-1779.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 41 times in Scopus Article | Citations

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Title Estimation of whole-plant transpiration of bananas using sap flow measurements
Author Lu, Ping
Woo, K. C.
Liu, Zhutian T.
Journal Name Journal of Experimental Botany
Publication Date 2002
Volume Number 53
Issue Number 375
ISSN 1460-2431   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-0035987364
Start Page 1771
End Page 1779
Total Pages 9
Publisher Oxford University Press
HERDC Category C1 - Journal Article (DEST)
Abstract Banana, one of the largest rhizomatous herbs in the world, is the fourth most important global food crop. It has a high water requirement, but the whole-plant water use in the field has not been determined satisfactorily. In this study, whole-plant water use in potted and field-grown banana plants (Musa 'Cavendish' cv. Williams) was successfully determined using a xylem sap flow method. This was achieved using Granier sensor probes implanted into the central cylinder of the banana corm. The whole-plant water use in field-grown bananas was 9-10 l plant(-1) d(-1). The values of daily total sap flow in potted plants correlated closely with gravimetric measurements (r(2)=0.92) and with changes in soil water status (r(2)=0.77). In well-watered, mature, field-grown plants, hourly sap flow also closely correlated with changes in solar radiation, vapour pressure deficit and evapotranspiration. The study indicates that sap flow measurement is a sensitive and accurate method for determining whole-plant water use in bananas under potted as well as field conditions.
Keywords banana
sap flow
water deficit
whole-plant water use
leaf gas-exchange
water relations
musa spp.
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Created: Wed, 28 Nov 2007, 14:16:08 CST