Chromosome diversity in species of the genus Arachis, revealed by FISH and CMA/DAPI banding, and inferences about their karyotype differentiation

SILVESTRI MC ; AM ORTIZ; G ROBLEDO; GI LAVIA

ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS.

ACAD BRASILEIRA DE CIENCIAS

Lugar: Rio de Janeiro; Año: 2020 vol. 92

0001-3765

ABSTRACTThe assignment of genome types in Arachis (Leguminosae) has been based on cross-compatibility analysis and molecular cytogenetic studies. The latter has also allowed karyotypically establishing well-defined genomes, however most of these studies have been focused mainly only on two sections. To increase the knowledge about the chromosome diversity of the whole genus, we performed a detailed karyotype characterization of representative species of most of the sections and genomes of Arachis. This characterization included chromosome morphology, chromosome bandings, and fluorescent in situ hybridization Based on the data obtained and other previously published data, we established the karyotype similarities by cluster analysis and defined eleven karyotype groups. The main characteristics of each karyotype group of Arachis were summarized. Our results provide useful information for cytogenetic and evolutionary studies, and also contribute to the identification of interspecific hybrids.