Impact of red and blue nets on physiological and morphological traits, fruit yield and quality of tomato (Solanum lycopersicum Mill.)

Thwe Aye Aye, Kasemsap Poonpipope, Vercambre Gilles, Gay Frédéric, Phattaralerphong Jessada, Gautier Hélène. 2020. Impact of red and blue nets on physiological and morphological traits, fruit yield and quality of tomato (Solanum lycopersicum Mill.). Scientia Horticulturae, 264:109185, 8 p.

https://doi.org/10.1016/j.scienta.2020.109185

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Quartile : Q1, Sujet : HORTICULTURE

Résumé : Plants can detect the quality, quantity and direction of light and use it as a signal to adapt their morphogenesis and growth. Thus depending on their light transmission, coloured nets used to protect plants from pests and limit irradiance can also impact plant growth and production. Tomato plants have been grown under blue or red nets transmitting similar photosynthetic yield from transplanting until the end of the fruit harvest to determine the importance of the light spectrum on plant growth, reproductive characteristics and fruit chemical composition. The morphological traits, organ physiology and fruit composition were strongly influenced by net colour. Plants under the red net were taller with a greater leaf area and a shoot to root ratio. An increased blue to red ratio slightly enhanced the reproductive development (visible bud development and 1st flowering) of tomato plants. An increased red to blue ratio enhanced the tomato glucose (17 %) and fructose (6 %) contents, while the citric (5 %) and malic acids (4 %) contents decreased, triggering a higher sugar/acid ratio. A high blue to red light limited organ growth and plant light interception was reduced despite a higher photosynthetic yield and a slight enhancement of the organ appearance rate. In addition, a low blue to red light increased fruit weight at harvest and even if it did not significantly improve fruit yield, it favoured fruit quality as it enhanced the tomato sugar/acid ratio.

Mots-clés Agrovoc : Solanum lycopersicum, lumière artificielle, composition globale, composition chimique, rendement des cultures, physiologie végétale, morphologie végétale, rayonnement photosynthétiquement actif

Mots-clés géographiques Agrovoc : Thaïlande

Mots-clés libres : Tomato fruit composition, Dry matter, Blue light, Red light, Photosynthetic response, Fruit quality, Blue to red ratio

Classification Agris : F62 - Physiologie végétale - Croissance et développement
F60 - Physiologie et biochimie végétale

Champ stratégique Cirad : CTS 3 (2019-) - Systèmes alimentaires

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