BACKGROUND: With the increasing demand for high-quality foodstuffs and concern for environmental sustainability, late-season nitrogen foliar fertilization of common wheat is now an important and widespread practice. RESULTS: We investigated the effects of late-season foliar vs. soil N fertilization on yield and protein content of four varieties of durum wheat, Aureo, Ariosto, Biensur and Liberdur, in a three-year field trial in northern Italy. Variations in LMW-GS, HMW-GS and gliadins were assessed by SDS-PAGE. We found that N applied to the canopy did not improve protein rate compared with N application to the soil (general mean: 138 mg g-1), but moderately increased productivity in the high-yielding varieties Liberdur and Biensur (three-year means: 7.23 vs. 7.13 t ha-1 and 7.53 vs. 7.09 t ha-1, in two varieties respectively). Technological quality was mainly related to variety choice, Aureo and Ariosto having higher protein rates and glutenin/gliadin ratios. We also found a strong ‘variety  N application method’ interaction in the proportions of protein sub-units within each class, particularly LMW-GS and gliadins. A promising result was the higher N uptake efficiency, although as apparent balance, combined with higher HMW/LMW-GS ratio in var. Biensur. CONCLUSION: Late-season foliar N fertilization allows N fertilizer saving, potentially providing environmental benefits in the rainy climate of the northern Mediterranean area, and also leads to variety-dependent up-regulation of essential LMW-GS and gliadins. Variety choice is a key factor in obtaining high technological quality, although it is currently associated with modest grain yield. We provide evidence of high quality in the specific high-yielding variety Biensur, suggesting its potential as a mono-varietal semolina for pasta production.

Variations in yield and gluten proteins in durum wheat varieties under late-season foliar vs. soil application of nitrogen fertilizer in a northern Mediterranean environment / Visioli, Giovanna; Urbana, Bonas; Cristian Dal, Cortivo; Gabriella, Pasini; Marmiroli, Nelson; Giuliano, Mosca; Teofilo, Vamerali. - In: JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE. - ISSN 1097-0010. - 98:6(2018), pp. 2360-2369. [10.1002/jsfa.8727]

Variations in yield and gluten proteins in durum wheat varieties under late-season foliar vs. soil application of nitrogen fertilizer in a northern Mediterranean environment

VISIOLI, Giovanna
;
MARMIROLI, Nelson;
2018-01-01

Abstract

BACKGROUND: With the increasing demand for high-quality foodstuffs and concern for environmental sustainability, late-season nitrogen foliar fertilization of common wheat is now an important and widespread practice. RESULTS: We investigated the effects of late-season foliar vs. soil N fertilization on yield and protein content of four varieties of durum wheat, Aureo, Ariosto, Biensur and Liberdur, in a three-year field trial in northern Italy. Variations in LMW-GS, HMW-GS and gliadins were assessed by SDS-PAGE. We found that N applied to the canopy did not improve protein rate compared with N application to the soil (general mean: 138 mg g-1), but moderately increased productivity in the high-yielding varieties Liberdur and Biensur (three-year means: 7.23 vs. 7.13 t ha-1 and 7.53 vs. 7.09 t ha-1, in two varieties respectively). Technological quality was mainly related to variety choice, Aureo and Ariosto having higher protein rates and glutenin/gliadin ratios. We also found a strong ‘variety  N application method’ interaction in the proportions of protein sub-units within each class, particularly LMW-GS and gliadins. A promising result was the higher N uptake efficiency, although as apparent balance, combined with higher HMW/LMW-GS ratio in var. Biensur. CONCLUSION: Late-season foliar N fertilization allows N fertilizer saving, potentially providing environmental benefits in the rainy climate of the northern Mediterranean area, and also leads to variety-dependent up-regulation of essential LMW-GS and gliadins. Variety choice is a key factor in obtaining high technological quality, although it is currently associated with modest grain yield. We provide evidence of high quality in the specific high-yielding variety Biensur, suggesting its potential as a mono-varietal semolina for pasta production.
2018
Variations in yield and gluten proteins in durum wheat varieties under late-season foliar vs. soil application of nitrogen fertilizer in a northern Mediterranean environment / Visioli, Giovanna; Urbana, Bonas; Cristian Dal, Cortivo; Gabriella, Pasini; Marmiroli, Nelson; Giuliano, Mosca; Teofilo, Vamerali. - In: JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE. - ISSN 1097-0010. - 98:6(2018), pp. 2360-2369. [10.1002/jsfa.8727]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2831997
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