Effect of Thiamine Foliar Application on Growth, Yield, and Fruit Quality of Bell Pepper "California Wonder"

Document Type : Research

Authors

1 Department of Horticulture, Faculty of Agriculture, Bu-Ali Sina University, Hamadan, Iran

2 Soil and Water Research Group, Chaharmahal and Bakhtiari Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization . Shahrekord, Iran

3 Crop and Horticultural Research Crop and Horticultural Research Group, Chaharmahal and Bakhtiari Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization , Shahrekord, Iran

10.22092/rhsj.2025.368806.1121

Abstract

This study investigated the effect of foliar application of thiamine on growth, yield and fruit quality of bell pepper. The experiment was conducted in a pot in the greenhouse of Chaharmahal and Bakhtiari Agricultural Research Center in 2013-2014, in a completely randomized design with three replications. The treatments included thiamine at three levels (50, 100 and 200 mg/L) and a control (distilled water). Foliar application was performed in 4 doses with an interval of 7 days until the critical growth stages including vegetative establishment (Stage 1), flowering stage (Stage 2), fruit formation (Stage 3) and fruit filling (Stage 4). The results showed that foliar application of thiamine had a significant effect on growth, yield and fruit quality indices of bell pepper. The highest fruit yield (882 g/plant) was observed in the 200 mg/L thiamine treatment. This treatment also significantly increased vitamin C and soluble solids (78.5% Brix). The highest fruit firmness (48.7 kg/cm) and highest antioxidant activity (72.23%) were also recorded at a concentration of 200 mg/L thiamine. Foliar application of thiamine at levels of 100 and 200 mg/L increased the concentration of phenolic compounds (385.54 and 412.07 mg gallic acid per 100 g fresh weight) and flavonoids (67.65 and 71.84 mg per 100 g fresh weight). Preharvest application of thiamine at a concentration of 200 mg/L showed the greatest positive effect on fruit quality. Although more research is needed in this area, the results of this study indicate that thiamine has the potential to improve growth, yield, and quality characteristics of bell pepper.

Keywords

Main Subjects

Research in Horticultural Sciences
Volume 3, Issue 2
February 2025
Pages 104-122

Files

Share

How to cite

Statistics