%0 Journal Article
%T Soil flooding affects the survival, growth and metabolism of Aegiphila sellowiana Cham. (Lamiaceae)? O alagamento do solo afeta a sobreviv¨ºncia, o crescimento e o metabolismo de Aegiphila sellowiana Cham. (Lamiaceae)?
%A Cristiano Medri
%A Jos¨¦ Ant£¿nio Pimenta
%A Eduardo Augusto Ruas
%A Luiz Ant£¿nio de Souza
%J Semina : Ci¨ºncias Biol¨®gicas e da Sa¨²de
%D 2012
%I Universidade Estadual de Londrina
%X In order to elucidate aspects of tolerance to hypoxia, Aegiphila sellowiana Cham. (Lamiaceae) plants were submitted to different periods of flooding. The survival, growth, stomatal conductance and photosynthesis were evaluated. There was 33,3% of mortality of flooded plants. Among the 66,7% of survivors, the relative growth rate (RGR) of roots, stems, leaves and whole plant was lower than the RGR of plants cultivated in drained soil. Flooded plants presented diageotrophic root production, increased leaf abscission and low production of new leaves. Flooding caused a reduction in stomatal conductance and photosynthetic rate. It is suggested that A. sellowiana has intolerance to soil flooding. Visando a elucidar aspectos da tolerancia ¨¤ hipoxia, plantas de Aegiphila sellowiana Cham. (Lamiaceae) foram submetidas a diferentes per¨ªodos de inunda  o. A sobreviv¨ºncia, o crescimento, a condutancia estom¨¢tica e a fotoss¨ªntese foram avaliados. Houve mortalidade de 33,3% das plantas alagadas. Dentre as 66,7% sobreviventes, a taxa de crescimento relativo (TCR) de ra¨ªzes, caule, folhas e da planta inteira foi inferior ¨¤ TCR das plantas cultivadas em solo drenado. As plantas alagadas apresentaram produ  o de ra¨ªzes diageotr¨®picas, maior abscis o foliar e baixa produ  o de novas folhas. O alagamento provocou redu  o na condutancia estom¨¢tica e na taxa fotossint¨¦tica. Sugere-se que A. sellowiana possui intolerancia ao alagamento do solo.
%K Flooding tolerance
%K Hypoxia
%K RGR
%K Stomatal conductance
%K Photosynthesis.
%U http://www.uel.br/revistas/uel/index.php/seminabio/article/view/10359