EFFECTS OF NaCl SALINITY ON GROWTH AND YIELD OF TWO PEPPER CULTIVARS

The salt tolerance of two greenhouse bell-pepper hybrids (Capsicum annum, L., ‘Sonar’ and ‘Lamuyo’) were studied.
Plants were grown in 8.5 l pots filled with sand-perlite mixture (1:3 v/v) and irrigated with half strength Hoagland solution containing O, 10, 25, 50, 100 and 150 mM/l of NaCl.
Plant growth parameters such as plant height, total leaf area, shoot and root dry weight were significantly (P=0.05) reduced at salinities higher than 25 mM NaCl in both cultivars.
Roots had the highest Na⁺ concentration, which increased with increasing salinity, while Cl^– in leaves was much higher than Na⁺. Potassium uptake was not affected by salinity increase.
Total yield in both cultivars was significantly reduced at salinities higher than 10 mM NaCl, the reduction being 95 % at 150 mM NaCl.
Both, fruit number per plant and fruit size were reduced by the salinity.

XXV International Horticultural Congress, Part 1: Culture Techniques with Special Emphasis on Environmental Implications – Nutrient Management

K.S. Chartzoulakis, G. Klapaki

Leaf area, dry weight, yield, ion content, salt tolerance, Capsicum annum L.

https://doi.org/10.17660/ActaHortic.2000.511.16