نوع مقاله : علمی پژوهشی
نویسندگان
1 گروه باغبانی، دانشکده کشاورزی،دانشگاه بوعلی سینا همدان، ایران
2 گروه تحقیقات خاک و آب، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان چهارمحال و بختیاری، سازمان تحقیقات، آموزش و ترویج کشاورزی،
3 گروه تحقیقات محصولات زراعی- باغی، مرکز تحقیقات و آموزش و منابع طبیعی استان چهارمحال و بختیاری، سازمان تحقیقات، آموزش و ترویج کشاورزی،
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
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.
کلیدواژه‌ها [English]
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