%0 Journal Article
%T Self-, cross- and interspecific pollinations in Passiflora capsularis and P. rubra
%A Amorim
%A Juliane dos Santos
%A Souza
%A Margarete Magalh£¿es
%A Viana
%A Am¨¦rico Jos¨¦ Carvalho
%A Freitas
%A J£¿sie Cloviane de Oliveira
%J Brazilian Journal of Botany
%D 2011
%I Scientific Electronic Library Online
%R 10.1590/S0100-84042011000400007
%X this study aimed to characterize the reproductive system of passiflora capsularis l. and p. rubra l. in vivo controlled pollinations, in vitro pollen germination and pollen-ovule (p:o) ratio evaluation were conducted. in self-pollination, intraspecific and interspecific pollination, p. capsularis showed means of 62.5, 68.7 and 48.4% of fertilized flowers, while in p. rubra, the averages were 67.2, 62.5 and 46.9%, respectively. for in vitro germination, 52.2% of p. capsularis pollen grains germinated while in p. rubra, the percentage was 64.4. the p:o ratio was 22.4 for p. capsularis, and 27.4 for p. rubra, which included them in the category of obligatory autogamous. passiflora capsularis and p. rubra can reproduce both by self-pollination and cross-pollination, and crossings between the two species succeeded though the success rate was lower than 50%. the characteristics of the reproductive system of both species allow the use of greater range of options on breeding methods for production of ornamental passiflora plants.
%K in vivo pollination
%K in vitro germination
%K passion flower
%K pollen-ovule ratio.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-84042011000400007&lng=en&nrm=iso&tlng=en