02237naa a2200349 a 450000100080000000500110000800800410001910000200006024500470008026000090012750000770013652012040021365000220141765000290143965000150146865000160148365000150149965000220151465000250153665300210156165300220158265300210160465300290162565300290165465300140168365300320169765300180172970000170174770000200176470000150178477300880179911038932018-12-10       2001    bl uuuu     u00u1 u    #d1 aROCHA, B. H. G.  aIsoenzymatic variability in wild potatoes.  c2001  aTítulo em português: Variabilidade isoenzimática em batata silvestre.  aTwo species of wild potato Solanum commersonii, subspecies commersonii and malmeanum, and S. chacoense, subspecies muelleri occur in southern Brazil. Their rusticity and easy adaptation to extreme climatic conditions make them valuable for breeding programs. The objective of this work was to analyze the isoenzymatic variability of 113 clones of wild potato subspecies. They were collected and maintained at Embrapa-Centro de Pesquisa Agropecuária de Clima Temperado, at Pelotas, RS, Brazil. Enzymes involved in energetic (group I) or in peripherical (group II) metabolism constituted the material used. Polyacrylamide horizontal gel electrophoresis was used to analyze peroxidase, aspartate transaminase, phosphoglucomutase and isocitrate dehydrogenase isoenzymes. Solanum spp. has considerable genetic variability for isoenzymatic patterns. Cluster analysis classified the clones into 51 subgroups, based on electrophoretic variants of group I enzymes, and into 89, when group II enzyme variants were added. Genotypic differentiation of S.chacoense muelleri in relation to S. commersonii commersonii and S. commersonii malmeanum is evident when expressed through similarity and cluster analysis.  agenetic variation  aisocitrate dehydrogenase  aisomerases  aperoxidases  aPeroxidase  aSolanum Tuberosum  aVariação Genética  aAminotransferase  aAminotransferases  aBatata silvestre  aIsocitrato desidrogenase  aIsoenzymatic variability  aIsomerase  aVariabilidade isoenzimatica  aWild potatoes1 aAUGUSTIN, E.1 aSILVA, J. B. da1 aVIEGAS, J.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 36, n. 5, p. 781-91, maio 2001