Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 370564
Title Moderate water stress affects tomato leaf water relations in dependence on the nitrogen supply
Author(s) Garcia, A.L.; Marcelis, L.F.M.; Garcia-Sanchez, F.; Nicolas, N.; Martinez, V.
Source Biologia Plantarum 51 (2007)4. - ISSN 0006-3134 - p. 707 - 712.
Department(s) Wageningen UR Greenhouse Horticulture
Publication type Refereed Article in a scientific journal
Publication year 2007
Keyword(s) gas-exchange - stomatal conductance - drought resistance - osmotic adjustment - growth - plants - nutrition - accumulation - responses - genotypes
Abstract The responses of water relations, stomatal conductance (g(s)) and growth parameters of tomato (Lycopersicon esculentum Mill. cv. Royesta) plants to nitrogen fertilisation and drought were studied. The plants were subjected to a long-term, moderate and progressive water stress by adding 80 % of the water evapotranspirated by the plant the preceding day. Well-watered plants received 100 % of the water evapotranspirated. Two weeks before starting the drought period, the plants were fertilised with Hoagland's solution with 14, 60 and 110 mM NO3- (N14, N60 and N110, respectively). Plants of the N110 treatment had the highest leaf area. However, g(s) was higher for N60 plants and lower for N110 plants. At the end of the drought period, N60 plants showed the lowest values of water potential (Psi(w)) and osmotic potential (Psi(s)), and the highest values of pressure potential (Psi(p)). N60 plants showed the highest Psi(s) at maximum Psi(p) and the highest bulk modulus of elasticity.
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