Karyotypes and microfluorometric studies in Porphyra columbina Mortagne (bangiales, rhodophyta), with reference to morphology and sexuality
Keywords: dna, morphology, sexuality, karyotype, chromosome, rhodophyta, porphyra, fluorometry, columbina, morphotype, Bangiales
Abstract
Ten morphotypes attributed to different species of Porphyra have been found in the central coast from Chile. In this paper we report the chromosome number and microfluorometric studies in P. columbina from Montemar, Chile (32°57′S - 71°33′W). Reproductive gametophytes from two morphotypes were separated by morphology, sexuality and characteristic pattern distribution of reproductive cells: P columbina (monoecious interspersed male and female patches distribution) and P. columbina f. 1 (dioecious and monoecious sectorised male and female patches distribution). The results of P. columbina (n=20 gametophytes) showed a basic haploid chromosome number of n=3, except one frond with 2 and 3 chromosomes in their cells. The results of P. columbina f.1 (n=26 gametophytes) showed a haploid chromosome number of n=4, but the haploid condition was found inconsistently in some fronds, having a chromosome range from 3 to 5. Mean of nuclear DNA fluorescence of spermatangia.and zygotosporangia of both morphotypes had coherent haploid and diploid values. Inter morphotypes comparison of nuclear DNA fluorescence values in spermatangia had significant differences (P<0.05).
Más información
Título según SCOPUS: | Karyotypes and microfluorometric studies in Porphyra columbina Mortagne (bangiales, rhodophyta), with reference to morphology and sexuality |
Título de la Revista: | REVISTA DE BIOLOGIA MARINA Y OCEANOGRAFIA |
Volumen: | 43 |
Número: | 1 |
Editorial: | UNIV VALPARAISO |
Fecha de publicación: | 2008 |
Página de inicio: | 17 |
Página final: | 23 |
Idioma: | eng |
URL: | http://www.scopus.com/inward/record.url?eid=2-s2.0-51549118671&partnerID=q2rCbXpz |
Notas: | SCOPUS |