Assessing Fusarium resistance and yield potential of 16 shallot genotypes

Abstract One of the primary diseases of shallots, caused by Fusarium oxysporum , is basal root. To control this disease, using resistant cultivars is the most effective method. In this study, the 16 shallot genotypes’ resistance to Fusarium and their agronomic performance were evaluated in Lembang, West Java. Eleven clones derived from crossing and five parents were used in the testing in a Randomized Complete Block Design (RCBD). The resuls indicated that among the 16 genotypes tested, 7 were highly resistant (I/33, I/35, I/96, II/44, II/81, VI/2, Sembrani), 3 were moderately resistant (II/9, II/19, I/379), 3 were susceptible (VIII/5, Trisula, Tiron), and 3 were severely susceptible (XII/1, XXI/8, Kuning). Two high-yielding genotypes (VI/2 and VIII/5) and two Fusarium-resistant genotypes (II/44 and I/96), as well as one Fusarium-resistant and high-yielding genotype (VI/2), were selected by combining the level of resistance and yield. Before being introduced as improved varieties, these clones might undergo more extensive testing in the field.