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Titolo:
High vapour pressure deficit influences growth, transpiration and quality of tomato fruits
Autore:
Leonardi, C; Guichard, S; Bertin, N;
Indirizzi:
Catania Univ, Ist Orticoltura & Floricoltura, I-95123 Catania, Italy Catania Univ Catania Italy I-95123 Floricoltura, I-95123 Catania, Italy INRA, Unite Bioclimatol, F-84914 Avignon 9, France INRA Avignon France 9INRA, Unite Bioclimatol, F-84914 Avignon 9, France
Titolo Testata:
SCIENTIA HORTICULTURAE
fascicolo: 3-4, volume: 84, anno: 2000,
pagine: 285 - 296
SICI:
0304-4238(20000605)84:3-4<285:HVPDIG>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
WATER RELATIONS; NUTRIENT SOLUTION; DRY-MATTER; HUMIDITY; PHOTOSYNTHESIS; SALINITY; YIELD; CROP;
Keywords:
Lycopersicon esculentum Mill.; tomato; high vpd; growth; transpiration; quality;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Leonardi, C Catania Univ, Ist Orticoltura & Floricoltura, Via Valdisavoia 5, I-95123 Catania, Italy Catania Univ Via Valdisavoia 5 Catania Italy I-95123 a, Italy
Citazione:
C. Leonardi et al., "High vapour pressure deficit influences growth, transpiration and quality of tomato fruits", SCI HORT A, 84(3-4), 2000, pp. 285-296

Abstract

Plants were grown in two glasshouse compartments under two vapour pressuredeficit (vpd) levels: low vpd was obtained by increasing air humidity witha fogging system, and high vpd was obtained during sunny hours in a greenhouse where air humidity was not controlled. The mean value, of the six driest hours of the day concerning the growing period of the fruits considered,was 1.6 kPa under low vpd and 2.2 kPa under high vpd conditions. Over the whole experimental period, the difference in mean hourly temperature never exceeded 0.8 degrees C. The oldest leaves were removed to different extentsin different plots to analyse whether a different leaf/fruit ratio could modify the effect of high vpd. Fruit growth and transpiration rates greatly varied during daylight hours;these variations were enhanced under high vpd condition. The increase in vpd produced a significant reduction in fruit fresh weight and in fruit water content, and an increase in soluble solids, while fruit dry weight was not affected. High vpd also enhanced the variability of fruit weight. When more leaves were removed the effect of vpd on soluble solids and water content was less important. The study shows that during summer, as vpd increases from 1.6 to 2.2 kPa, effects can be observed both on tomato growth and quality characteristics. Therefore, an improvement of the control of vpd for the optimisation of greenhouse tomato production is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 18:21:26