Data di Pubblicazione:
2022
Citazione:
Qualitative responses of rocket varieties to biostimulants application / G. Franzoni, S. Vignati, D. Guffanti, F. Florio, M. Gibin, A. Petrini, C. Colombani, G. Cocetta, A. Ferrante. ((Intervento presentato al 31. convegno International Horticultural Congress (IHC 2022) tenutosi a ANGERS nel 2022.
Abstract:
Nutritional quality and health benefit of vegetables are often related to the
accumulation of biological active substances like secondary metabolites and phytonutrients.
Numerous scientific evidence demonstrated the positive impact of plant biostimulants on
different product quality traits. This work aims to investigate the effect of two biostimulant
products on some quality traits in two cultivars of Eruca sativa Mill. (E1 and E2) and two
cultivars of Diplotaxis tenuifolia (L.) DC (D1 and D2). Rocket plants were grown under a
greenhouse tunnel in summer 2021 (June-July) and two commercial biostimulants were
tested: Megafol ® and Actiwave ® applied two times during cultivation at the concentration of
0.3 mL L -1 and 3 mL L -1 , respectively. Sampling and related analyses were carried out at
harvest. Changes in chlorophyll and chlorophyll a fluorescence were measured with non-
destructive tools, whereas several compounds such as total and reducing sugars, sucrose,
total glucosinolates, nitrates, chlorophyll, carotenoids, anthocyanins, and phenolic content
were analysed through laboratory determinations. Results showed some diversity among
rocket varieties and in response to the biostimulant products. The nitrate content was
generally lower in plants treated with Actiwave ® compared to the control and regardless the
cultivar. At the same time, the product induced a slight increase of total sugars in Diplotaxis
genotypes, whereas the levels were steady in Eruca varieties. Megafol ® application induced
an opposite effect in the accumulation of total sugars in D2 and E1 varieties whereas no
change was observed in D1 and E2. The same treatment caused a slight decrease in phenols
and anthocyanin content in D1 and E1 cultivar while the levels measured in D2 and E2 were
similar to the control plants. The results revealed a variability in the quality traits depending
on the combined effect of biostimulants application and genetic background. Further
research will help to clarify which product is better for the specific varieties.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Keywords:
Eruca sativa, Diplotaxis tenuifolia, quality, biostimulant
Elenco autori:
G. Franzoni, S. Vignati, D. Guffanti, F. Florio, M. Gibin, A. Petrini, C. Colombani, G. Cocetta, A. Ferrante
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