Isozymic variation of three species of Manihot genera (Euphorbiaceae) morphologically related to cassava (Manihot esculenta Crantz)

Abstract

Starch gel electrophoresis and isozyme analysis were used to estimate the genetic similarity among Manihot flabellifolia, M. peruviana and M. pilosa, morfologically related to cassava, and probably having close phylogenetic relationship with it. The isozymic systems tested were SKD, LAP, HK, SOD, ACP, ALP, PGD, PGI, ALD, IDH, MDH, PGM, AK, GOT, NADHDH, GDH and NADPHDH. Using the genetic similarity index of Jaccard, the data indicated that M. flabellifolia, M. peruviana e M. esculenta formed a very related group, while M. pilosa grouped separately.