Rocket species are largely consumed as baby leaf vegetables. They belong to the Brassicaceae family and can be considered as ‘functional food’ due to the abundance in several bioactive compounds, such as glucosinolates, phenolic compounds, anthocyanin, vitamins, among others. Nowadays, the consumer demand for nutrient-rich products with health benefits is rowing steadily. Scientific evidence has shown the positive effect of plant biostimulants on crops and demonstrated their ability to improve quality traits and nutrient use efficiency. These characteristics make them suitable to be used as agricultural tools to increase the economic and environmental sustainability. This work is part of the project MIND FoodS HUB which encourages the agri-food research and promotes food quality and sustainable production. The study aimed to evaluate the effect of two commercial biostimulants (Megafol® and Actiwave®) on quality traits of two Eruca sativa Mill (E1 and E2) cultivar and two Diplotaxis tenuifolia (L.) DC (D1 and D2) cultivar. Rocket plants grown in plastic tunnel in the North of Italy during the summer season (June-July). The biostimulants products were applied two times during the cultivation at the recommended dosage. Rocket leaves were sampled and analysed at harvest. Changes in chlorophyll content and chlorophyll a fluorescence were evaluated non-destructively, whereas several compounds, including total and reducing sugars, sucrose, total glucosinolates, nitrate, carotenoids, anthocyanins, and phenolic content were determined. The nitrate content was generally lower in plants treated with Actiwave® compared to the control. At the same time, the total sugars increased in Diplotaxis genotypes while they were steady in Eruca varieties. Megafol® application induced an opposite effect on total sugars in D2 and E1 varieties whereas no changes were observed in D1 and E2. Results showed a variability in quality traits depending on the combined effect of biostimulants and cultivars.
Changes in qualitative traits of rocket varieties (Eruca sativa and Diplotaxis tenuifolia) as influenced by biostimulants / G. Franzoni, S. Vignati, D. Guffanti, F.E. Florio, G. Cocetta, A. Ferrante. ((Intervento presentato al 3. convegno AISSA#UNDER40 tenutosi a Bolzano : 14-15 luglio nel 2022.
Changes in qualitative traits of rocket varieties (Eruca sativa and Diplotaxis tenuifolia) as influenced by biostimulants
G. Franzoni;S. Vignati;D. Guffanti;F.E. Florio;G. Cocetta;A. Ferrante
2022
Abstract
Rocket species are largely consumed as baby leaf vegetables. They belong to the Brassicaceae family and can be considered as ‘functional food’ due to the abundance in several bioactive compounds, such as glucosinolates, phenolic compounds, anthocyanin, vitamins, among others. Nowadays, the consumer demand for nutrient-rich products with health benefits is rowing steadily. Scientific evidence has shown the positive effect of plant biostimulants on crops and demonstrated their ability to improve quality traits and nutrient use efficiency. These characteristics make them suitable to be used as agricultural tools to increase the economic and environmental sustainability. This work is part of the project MIND FoodS HUB which encourages the agri-food research and promotes food quality and sustainable production. The study aimed to evaluate the effect of two commercial biostimulants (Megafol® and Actiwave®) on quality traits of two Eruca sativa Mill (E1 and E2) cultivar and two Diplotaxis tenuifolia (L.) DC (D1 and D2) cultivar. Rocket plants grown in plastic tunnel in the North of Italy during the summer season (June-July). The biostimulants products were applied two times during the cultivation at the recommended dosage. Rocket leaves were sampled and analysed at harvest. Changes in chlorophyll content and chlorophyll a fluorescence were evaluated non-destructively, whereas several compounds, including total and reducing sugars, sucrose, total glucosinolates, nitrate, carotenoids, anthocyanins, and phenolic content were determined. The nitrate content was generally lower in plants treated with Actiwave® compared to the control. At the same time, the total sugars increased in Diplotaxis genotypes while they were steady in Eruca varieties. Megafol® application induced an opposite effect on total sugars in D2 and E1 varieties whereas no changes were observed in D1 and E2. Results showed a variability in quality traits depending on the combined effect of biostimulants and cultivars.
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