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EFFECTS OF SALINE WATER ON WATER STATUS, YIELD AND FRUIT QUALITY OF WILD (SOLANUM CHILENSE) AND DOMESTICATED (SOLANUM LYCOPERSICUM VAR. CERASIFORME) TOMATOES

Published online by Cambridge University Press:  03 September 2012

JUAN-PABLO MARTÍNEZ ,
ALEJANDRO ANTÚNEZ ,
RICARDO PERTUZÉ ,
MARIA DEL PILAR ACOSTA ,
XIMENA PALMA ,
LIDA FUENTES ,
ANIBAL AYALA ,
HECTOR ARAYA  and
STANLEY LUTTS
JUAN-PABLO MARTÍNEZ*
Affiliation:
Instituto de Investigaciones Agropecuarias (INIA-La Cruz), Chorrillos N° 86, La Cruz, Quillota, Chile Regional Centre for Studies of Food for Health (CREAS), Blanco 1623, Of 1402. Edificio Torres Mar del Sur II, Valparaíso, Chile
ALEJANDRO ANTÚNEZ
Affiliation:
Instituto de Investigaciones Agropecuarias (INIA-La Platina), Santa Rosa 11610, La Pintana, Casilla 3, Santiago, Chile
RICARDO PERTUZÉ
Affiliation:
Universidad de Chile, Facultad de Ciencias Agronómicas, Santa Rosa 11315, Santiago, Chile
MARIA DEL PILAR ACOSTA
Affiliation:
Instituto de Investigaciones Agropecuarias (INIA-La Cruz), Chorrillos N° 86, La Cruz, Quillota, Chile
XIMENA PALMA
Affiliation:
Facultad de Química y Farmacia, Universidad de Valparaíso, Avda. Gran Bretaña 1093, Valparaíso, Chile
LIDA FUENTES
Affiliation:
Instituto de Investigaciones Agropecuarias (INIA-La Cruz), Chorrillos N° 86, La Cruz, Quillota, Chile Regional Centre for Studies of Food for Health (CREAS), Blanco 1623, Of 1402. Edificio Torres Mar del Sur II, Valparaíso, Chile
ANIBAL AYALA
Affiliation:
Instituto de Investigaciones Agropecuarias (INIA-La Cruz), Chorrillos N° 86, La Cruz, Quillota, Chile
HECTOR ARAYA
Affiliation:
Regional Centre for Studies of Food for Health (CREAS), Blanco 1623, Of 1402. Edificio Torres Mar del Sur II, Valparaíso, Chile Facultad de Química y Farmacia, Universidad de Valparaíso, Avda. Gran Bretaña 1093, Valparaíso, Chile Universidad de Chile, Facultad de Medicina, Departamento de Nutrición. Independencia 1027, Santiago, Chile
STANLEY LUTTS
Affiliation:
Groupe de Recherche en Physiologie Végétale – Earth and Life Institute – Agronomy (ELI-A) Université Catholique de Louvain 5 (Bte L7.07.13) Place Croix du Sud, 1348 Louvain-la-Neuve, Belgium
*
§Corresponding author. Email: [email protected]
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Summary

Farmers around the world are concerned about the effects of human-induced salinity on crop yield and quality. Therefore, researchers are actively testing wild relatives of cultivated plants to identify candidates to improve crop performance under salt stress. A study was conducted to understand the effects of salt stress (Sodium chloride, NaCl) on cultivated tomato species (Solanum lycopersicum var. cerasiforme L.) and a wild tomato relative (Solanum chilense Dun.) from the Northern part of Chile. Plants were cultivated hydroponically under controlled environmental conditions for 112 days with nutrient solution containing 0 mM (3 dS m−1), 40 mM (6 dS m−1) and 80-mM (9 dS m−1) NaCl. Salt stress reduced the shoot biomass in S. lycopersicum but not in S. chilense. Both species were able to maintain the leaf water content; however, the cultivated S. lycopersicum showed osmotic adjustment, while S. chilense did not. Salt stress reduced the total fruit yield in S. lycopersicum based on a decrease in the mean fruit weight, but it had no impact on the number of fruits per plant. In contrast, salt stress had no significant impact on the fruit yield in S. chilense. Salt stress increased the total soluble solids content in S. lycopersicum and the titratable acidity in S. chilense. It was concluded that S. chilense displays a contrasting behaviour in response to prolonged exposure to moderate salinity compared with S. lycopersicum, and that this related species could be an interesting plant for breeding purposes.

Type
Research Article
Information
Experimental Agriculture , Volume 48 , Issue 4 , October 2012 , pp. 573 - 586
Copyright
Copyright © Cambridge University Press 2012

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