Data/hora: 03/06/2024 01:56:52

Provedor de dados: | 74
País: | Brazil
Título: | Comparative karyotypic analysis in the Alstroemeria hookeri Lodd. (Alstroemeriaceae) complex sensu Bayer (1987)
Autores: | Baeza,Carlos; Ruiz,Eduardo; Negritto,María.
Data: | 2010-01-01
Ano: | 2010
Palavras-chave: | Alstroemeria hookeri; Complex; Karyotype; Polymorphisms; Chile.
Resumo: | Alstroemeria L. (Alstroemeriaceae) is an American genus of monocots with two principal distribution centers in Chile and Brazil. In Chile, it is represented by about 32 species, most of them in central Chile, an area known for its high level of endemism. The "complex" Alstroemeria hookeri is endemic to Chile, where it is distributed from the Coquimbo to the Bío-Bío Region. We analyzed the karyotypes of 36 populations of this complex along its natural distribution. Ten metaphases per population were used for chromosome measurements. All analyzed subspecies presented a well defined asymmetric karyotype. The populations of A. hookeri subsp. hookeri collected in the coastal range of the Bío-Bío Region and the populations from the Central Valley of this Region (Pangal del Laja) presented striking morphological differences in the karyotype, mainly on chromosome 3. The population of A. hookeri subsp. recumbens from Pichicuy showed a polymorphism on chromosome 7, which differed from the other analyzed populations of this subspecies. Phenetic analysis suggested that A. hookeri subsp. cummingiana, which showed a more symmetrical karyotype and did not grow in sandy soil, should be alocated to A. cummingiana rather than considered as part of the hookeri complex.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000100020
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572010005000012
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.33 n.1 2010
Fonte: | info:eu-repo/semantics/openAccess