Isoenzymatic variability in wild potatoes.
AUTOR(ES)
ROCHA, B.H.G.
FONTE
Pesquisa Agropecuaria Brasileira
DATA DE PUBLICAÇÃO
2011
RESUMO
Two 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.
ASSUNTO(S)
peroxidases aminotransferases isomerases isocitrate dehydrogenase genetic variation peroxidase aminotransferase isomerase isocitrato desidrogenase variacao genetica
ACESSO AO ARTIGO
http://www.alice.cnptia.embrapa.br/handle/doc/103893Documentos Relacionados
- Formation of trichothecenes by Fusarium solani var. coeruleum and Fusarium sambucinum in potatoes.
- Isoenzymatic variability of cassava accessions from different regions in Brazil.
- Development of PCR primers from internal transcribed spacer region 2 for detection of Phytophthora species infecting potatoes.
- Combined effect of water activity and pH on inhibition of toxin production by Clostridium botulinum in cooked, vacuum-packed potatoes.
- Curva de crescimento e acúmulo de nutrientes pela cultura da batata cv. Atlantic .