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Water relations of melon (Cucumis melo) plants in soilless culture

Ismail, Mohd Razi and Muhammad, Fauzi (1995) Water relations of melon (Cucumis melo) plants in soilless culture. Pertanika Journal of Tropical Agricultural Science, 18 (3). pp. 169-176. ISSN 0126-6128

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Melon (Cucumis melo) plants were grown in a peat and sand mixture under water availability of 25, 50, 166% and field capacity. The respective amount of water added to substrate was 300, 600, 2000 and 1200 ml per day. Vegetative growth and yield decreased proportionately according to water availability. Overwatering above substrate field capacity resulted in the highest growth and yield as the plants compensated for the influence of high evaporative demand in the microclimate. Total soluble solids in the fruit increased rapidly during fruit development under reduced water availability. Increased water availability improved leaf water status, stomatal response and photosynthesis rate. At lowest water availability, a reduction in leaf water status caused photosynthesis rate to decline and to reach negative values by the end of the growth period. A relationship between leaf water status and stomatal resistance was established and is discussed with reference to hydraulic and nonhydraulic causes controlling stomatal responses.

Item Type:Article
Keyword:Cucumis melo; Water availability; Growth; Relative water content; Stomatal resistance; Photosynthesis rate; Yield
Faculty or Institute:Faculty of Agriculture
Publisher:Universiti Putra Malaysia Press
ID Code:3504
Deposited By: Nasirah Abu Samah
Deposited On:30 Nov 2009 08:40
Last Modified:04 Sep 2015 09:42

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