| Resumen: | Se analizaron 186 entradas de arracacha cultivada, procedentes de los departamentos de Piura, Lambayeque, Amazonas y Cajamarca, principalmente. El germoplasma se plantó (15 plantas por entrada a 0.90 x 0.60 m), en el campo experimental del Programa de Raíces y Tubérculos Andinos de la Universidad Nacional de Cajamarca (UNC): 7° 29’45’’ LS, 78° 10’ 12’’ LO y 2670msnm, 14° C de temperatura diaria y 670 mm de lluvia anual. Se usaron 17 descriptores cualitativos (nueve de hoja, tres de colino y cinco de raíz). Los datos de hoja se tomaron a los seis meses después de la siembra y los dos mediante la RHS Colour Chart (1995). Se elaboró una matriz básica de datos y se hicieron análisis de agrupamiento (fenograma-UPGMA) y de componentes principales, con NTSYS 2.2. Mediante el software DIVA GIS 3.0 se generó un mapa de distribución geográfica de entradas y de morfotipos. La colección consta de 76 morfotipos y cuatro formas hortícolas y se, distribuye en las regiones Yunga marítima y pluvial, Quechua y Selva alta, entre 1000 y 3600 msnm, con mayor tendencia hacia la cuenca oriental. Las provincias de mayor variabilidad son Cutervo, Chota y Hualgayoc. (AU)^iesOne hundred eighty six cultivated arracacha’s accessions coming from Piura, Lamabayeque, Amazonas and Cajamarca department, were examined. The germoplasm was planted (15plants per accession (0.90x0.6m) at the experimental fields to the Andean Roots and Tubers Program of the National University of Cajamarca. Seventeen qualitative descriptors: nine of leaf, three of offshoot or cormel (colimno9 and five of roots were used. Leaf data was registered six months after planting, and those of offshoot and roots were registered during the harvest (11months). Colors were qualified by means of the RHS colour chart (1995). A basic data matrix was elaborated and an analyses of clusters (UPGMA-phenogram) and of principal components was elaborated, with NTSYS 2.1. With the DIVA GIS 3.0 software a geographic-distribution map of accessions and of morphotypes was obtained. The collection contains 76 morphotypes and four horticultural forms and is distributed in the maritime and pluvial Yunga, Quechua and Selva Alta regions among 1000 and 3600 masl, with principal tendency toward the oriental basin. Cutervo, Chota y Hualgayoc are the provinces showing the highest variability. (AU)^ien.
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