SciELO - Scientific Electronic Library Online

vol.29 issueUNICOSurvey of the nutritional condition of the coffee in the State of São Paulo through foliar analyses: II - Podzolized soils of Lins and Marilia, Latosolic B "Terra Roxa" and Ortho-Red Yellow PodzolEffect of different nitrogen fertilizers on the productivity of flooded rice author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links



Print version ISSN 0006-8705On-line version ISSN 1678-4499


CONAGIN, Cândida H. T. M.  and  PINTO, Alcides J. D'Andréa. Morphological characters and chromosome numbers in Pelargonium. Bragantia [online]. 1970, vol.29, n.unico, pp.249-261. ISSN 0006-8705.

Morphological characters and chromosome number of ten cultivars and five species of aromatic Pelargonium, as well as ornamental cultivars, were compared. The oil cultivars are very alike morphologically and they are supposed to be clones of P x asperum. They have irregular meiosis with high frequency of univalents and are male sterile; their chromosome number is 2n=77. Some of the species (P. graveolens from Italy, P. odoratissimum, P. tomentosuni and P. grossularioides) agree with previous descriptions, but others, as P. graveolens from Argentina and P. radula from Italy, were probably introduced with a wrong classification. Their chromosome number were counted and compared to previous determinations with excelent agreement. No data was found concerning P. grossularioides; the present chromosome counting seems to be the first. The ornamental cultivars studied here belong to the species P. zonale; some are diploid, others tetraploid; in the diploid cultivars mixoploidy is frequent. As chromosome number is concerned, three basic numbers were established; x=8 for P. odoratissimum, x = 9 for P. grossularioides cv. cocoanut, P. graveolens from Italy and P. zonale (ornamental cultivars), and x=11 for P. graveolens from Argentina, P. tomentosuni, P. radens and P. x asperum (aromatic cultivars).

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License