The present study evaluated the content of glycoalkaloids (α-chaconine and α-solanine) in the edible portion of six hybrid potato clones coming from the Italian potato breeding programme focused on resistance against the potato tuber moth (Phthorimaea operculella Zeller). To evaluate the influence of agro-climatic conditions on glycoalkaloid content, the potato clones were grown for two consecutive years in the four main potato production areas in Italy. The effect of genotype, cultivation area and year, and the interaction among these factors, were studied. A large variability in glycoalkaloid concentration was found (from 16.8 to 227 mg kg⁻¹). Among the new potato clones, three (ISCI 181/10–4, ISCI 182/10–1 and ISCI 232/12–1) had low glycoalkaloid concentrations. Only one potato clone (ISCI 207/11–1) was over the safety limit of 200 mg kg⁻¹. Genotypic variation was the main factor influencing glycoalkaloid accumulation, although the influence of agro-climatic conditions was also highlighted.

本研究评估了来自意大利马铃薯育种计划的六个杂种马铃薯无性系的可食部分中糖碱生物碱（α-查茄碱和α-茄碱）的含量，该克隆的重点是对马铃薯块茎蛾（Phthorimaea operculella Zeller）的抗性。为了评估农业气候条件对生物碱含量的影响，马铃薯克隆在意大利的四个主要马铃薯生产地区连续两年种植。研究了基因型，栽培面积和年份以及这些因素之间的相互作用。发现糖类生物碱浓度存在较大差异（从16.8至227 mg kg ^-1）。在新的马铃薯克隆中，三个（ISCI 181 / 10-4，ISCI 182 / 10-1和ISCI 232 / 12-1）的糖碱含量较低。只有一个马铃薯克隆（ISCI 207 / 11-1）超过了200 mg kg ^-1的安全限度。基因型变异是影响糖类生物碱积累的主要因素，尽管也强调了农业气候条件的影响。