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Isohydric and anisohydric characterisation of vegetable crops. The classification of vegetables by their physiological responses to water stress

Limpus, S. (2009) Isohydric and anisohydric characterisation of vegetable crops. The classification of vegetables by their physiological responses to water stress. Project Report. The Department of Primary Industries and Fisheries.

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Abstract

Research on the physiological response of crop plants to drying soils and subsequent water stress has grouped plant behaviours as isohydric and anisohydric. Drying soil conditions, and hence declining soil and root water potentials, cause chemical signals—the most studied being abscisic acid (ABA)—and hydraulic signals to be transmitted to the leaf via xylem pathways. Researchers have attempted to allocate crops as isohydric or anisohydric. However, different cultivars within crops, and even the same cultivars grown in different environments/climates, can exhibit both response types. Nevertheless, understanding which behaviours predominate in which crops and circumstances may be beneficial. This paper describes different physiological water stress responses, attempts to classify vegetable crops according to reported water stress responses, and also discusses implications for irrigation decision-making.

Item Type:Monograph (Project Report)
Business groups:Horticulture and Forestry Science
Additional Information:© The State of Queensland, Department of Primary Industries and Fisheries, 2009. Copyright protects this publication. Except for purposes permitted by the Copyright Act 1968, reproduction by whatever means is prohibited without prior written permission of the Department https://www.daf.qld.gov.au/website-information/copyright or telephone the Business Information Centre on 13 25 23 (Queensland residents)
Keywords:Vegetable crops; water loss; isohydric; anisohydric; crop plants; drying soils.
Subjects:Plant culture > Vegetables
Agriculture > Agriculture (General) > Agricultural ecology (General)
Deposited On:22 Nov 2011 02:21
Last Modified:13 Nov 2017 03:26

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