Brassica oleracea crops, such as kale, as well known linked to the health value for their many secondary metabolites activate antioxidant and chemio-preventive activities against several chronic generative diseases, such as glucosinolates and polyphenols. As part of the European project H2020 BRESOV "Breeding for Resilient, Efficient and Sustainable Organic Vegetable Production", the possibility of selecting water stress resistant genetic materials was explored. To select germplasm for organic cultivation yields and health characteristics of six accessions of kale, subjected to 35% and 100% of the ETc irrigation regimes vive have been evaluated. Six accessions were grown in a certified organic greenhouse from December 2018 to July 2019. At harvest the bio-agronomic characterization of the plant (height, diameter, leaf, stem, and root weight) and chemical quality of the leaves (total polyphenols and their profile) have been analysed. On the average of the 6 accessions studied, all the biometric and productive characteristics were affected by the irrigation regime, and in particular: the height of the plant was 26.1 vs 73.4 cm, the basal diameter 18.4 vs 26.4 mm, the stem diameter 29.6 vs 35.3 mm, the number of leaves 22 vs 34, respectively at 35 and 100% of the ETc, with an overall biomass production of 651 vs 1864 g plant1. Plants in sub-optimal conditions have directed production more towards root growth with an average incidence of 9% on the total biomass vs 7% registered at 100% of the ETc. The total phenol content was 90.42 vs 898.59 mg of gallic acid g-1 and it resulted influenced both by the genotype and by the irrigation regime. In the average of the irrigation regimes, the accessions "BH 50" (Di3A germplasm bank of the University of Catania) and "HRIGRU7546" (bank germplasm of Warwick -UK) were the most productive and the more resistant to water stress with satisfactory production of edible parts and a good content of phenolic compounds.
Influence of irrigation regime on productive and qualitative traits of kale (Brassica oleracea var. acephala DC) under organic farming system
MG Melilli;S Argento;
2021
Abstract
Brassica oleracea crops, such as kale, as well known linked to the health value for their many secondary metabolites activate antioxidant and chemio-preventive activities against several chronic generative diseases, such as glucosinolates and polyphenols. As part of the European project H2020 BRESOV "Breeding for Resilient, Efficient and Sustainable Organic Vegetable Production", the possibility of selecting water stress resistant genetic materials was explored. To select germplasm for organic cultivation yields and health characteristics of six accessions of kale, subjected to 35% and 100% of the ETc irrigation regimes vive have been evaluated. Six accessions were grown in a certified organic greenhouse from December 2018 to July 2019. At harvest the bio-agronomic characterization of the plant (height, diameter, leaf, stem, and root weight) and chemical quality of the leaves (total polyphenols and their profile) have been analysed. On the average of the 6 accessions studied, all the biometric and productive characteristics were affected by the irrigation regime, and in particular: the height of the plant was 26.1 vs 73.4 cm, the basal diameter 18.4 vs 26.4 mm, the stem diameter 29.6 vs 35.3 mm, the number of leaves 22 vs 34, respectively at 35 and 100% of the ETc, with an overall biomass production of 651 vs 1864 g plant1. Plants in sub-optimal conditions have directed production more towards root growth with an average incidence of 9% on the total biomass vs 7% registered at 100% of the ETc. The total phenol content was 90.42 vs 898.59 mg of gallic acid g-1 and it resulted influenced both by the genotype and by the irrigation regime. In the average of the irrigation regimes, the accessions "BH 50" (Di3A germplasm bank of the University of Catania) and "HRIGRU7546" (bank germplasm of Warwick -UK) were the most productive and the more resistant to water stress with satisfactory production of edible parts and a good content of phenolic compounds.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
