Alternaria alternata is one of the main microorganisms responsible for affecting seeds and causing infection and eventually seed discoloration. The purpose of this work was to analyze sanitary quality in seeds of five amaranth genotypes, of which four were late-cycle (160 days) and the remaining one was early-cycle (79 days). Trials were carried out in two consecutive seasons during 2013–2015 following an experimental design set up in completely randomized blocks with three replications. The following variables were analyzed: seed yield per square meter, 1000 seed weight, germination, incidence of seed infection with A. alternata, incidence of seed discoloration in large and small seeds, and mycotoxin contamination. Results showed that in the early genotype infection and seed discoloration produced by A. alternata was lower and mycotoxin content was either lower or null than in late genotypes.

Alternaria alternata是影响种子并引起感染并最终导致种子变色的主要微生物之一。这项工作的目的是分析5个苋菜基因型种子的卫生质量，其中4个为晚周期（160天），其余1个为早周期（79天）。试验在 2013-2015 年期间连续两个季节进行，试验设计采用完全随机区组设置，具有三个重复。分析了以下变量：每平方米的种子产量、1000 粒种子重量、发芽率、种子感染 A.alternata 的发生率、大小种子变色和霉菌毒素污染的发生率。结果表明，与晚期基因型相比，A. alternata产生的早期基因型感染和种子变色较低，霉菌毒素含量较低或为零。