<![CDATA[Efforts to obtain superior pepper cultivars from a group of accessions require a method to facilitate the selection of superior accessions. Cluster analysis is a method of grouping data based on similar characteristics so that it can summarize, simplify and explain data algorithms from the tested accession population. The study aims to group new pepper lines based on agronomic properties as a basis for selecting superior pepper clones in peatlands. Plant materials in the form of 67 mutant pepper accessions that are 1 year old are then transplanted in the field. Variables consist of internode length, number of branches, number of adventive roots, leaf length and leaf width. Data are analyzed clusters based on 3 leaf shapes. The results showed that the use of ethyl methane sulfonate in Bengkayang pepper succeeded in increasing plant morphological diversity in leaf length and leaf width characters which resulted in variations in round, oval, and long leaves. Cluster analysis based on morphological characters succeeded in grouping 67 M1 mutant pepper accessions into three main groups. Cluster 2 is the most different group from the parents dominated by long leaf shapes. In contrast, Cluster 3 has the closest characteristics to the parent (wild type), dominated by oval leaves and the highest level of uniformity. A total of 19 accessions have long leaf characteristics that have the potential to become candidates for new superior lines. Further testing is needed up to the generative phase to test the stability of traits, productivity, and resistance to biotic and abiotic stresses before being determined as candidates for new superior varieties that are adaptive to peatlands]]>
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