Sinda Ben Mariem1, Jon González-Torralba1, Concha Collar2, Iker Aranjuelo1, Fermín Morales1. 1. Instituto de Agrobiotecnología (IdAB), CSIC-Gobierno de Navarra, Avda. de Pamplona 123, 31192 Mutilva, Navarra, Spain. 2. Cereals and Cereal-Based Products, Food Science Department, Instituto de Agroquímica y Tecnología de Alimentos (CSIC), Avda. Catedrático Agustín Escardino, 7, 46980 Paterna, Spain.
Abstract
The availability and management of N are major determinants of crop productivity, but N excessive use has an associated agro-ecosystems environmental impact. The aim of this work was to investigate the influence of N fertilization on yield and grain quality of 6 durum wheat genotypes, selected from 20 genotypes as high- and low-yielding genotypes. Two N levels were applied from anthesis to maturity: high (½ Hoagland nutrient solution) and low (modified ½ Hoagland with one-third of N). Together with the agronomic characterization, grain quality analyses were assessed to characterize carbohydrates concentration, mineral composition, glutenin and gliadin concentrations, polyphenol profile, and anti-radical activity. Nitrogen supply improved wheat grain yield with no effect on thousand-grain weight. Grain soluble sugars and gluten fractions were increased, but starch concentration was reduced, under high N. Mineral composition and polyphenol concentrations were also improved by N application. High-yielding genotypes had higher grain carbohydrates concentrations, while higher concentrations in grain minerals, gluten fractions, and polyphenols were recorded in the low-yielding ones. Decreasing the amount of N to one-third ensured a better N use efficiency but reduced durum wheat agronomic and quality traits.
The availability and management of n class="Chemical">N are major determinpan>anpan>ts of crop productivity, but pan> class="Chemical">N excessive use has an associated agro-ecosystems environmental impact. The aim of this work was to investigate the influence of Nfertilization on yield and grain quality of 6 durum wheat genotypes, selected from 20 genotypes as high- and low-yielding genotypes. Two N levels were applied from anthesis to maturity: high (½ Hoagland nutrient solution) and low (modified ½ Hoagland with one-third of N). Together with the agronomic characterization, grain quality analyses were assessed to characterize carbohydrates concentration, mineral composition, glutenin and gliadin concentrations, polyphenol profile, and anti-radical activity. Nitrogen supply improved wheat grain yield with no effect on thousand-grain weight. Grain soluble sugars and gluten fractions were increased, but starch concentration was reduced, under high N. Mineral composition and polyphenol concentrations were also improved by N application. High-yielding genotypes had higher grain carbohydrates concentrations, while higher concentrations in grain minerals, gluten fractions, and polyphenols were recorded in the low-yielding ones. Decreasing the amount of N to one-third ensured a better N use efficiency but reduced durum wheat agronomic and quality traits.
Entities:
Keywords:
Triticum turgidum L. var. durum; durum wheat yield; grain quality; nitrogen fertilization
Authors: María Ciudad-Mulero; Lillian Barros; Ângela Fernandes; Isabel C F R Ferreira; Mª Jesús Callejo; Mª Cruz Matallana-González; Virginia Fernández-Ruiz; Patricia Morales; José M Carrillo Journal: Nutrients Date: 2020-02-17 Impact factor: 5.717
Authors: Pasquale Tripodi; Maria R Figàs; Fabrizio Leteo; Salvador Soler; María José Díez; Gabriele Campanelli; Teodoro Cardi; Jaime Prohens Journal: Front Plant Sci Date: 2022-06-29 Impact factor: 6.627