%0 Journal Article
%T Altera  o na atividade de peroxidase e concentra  o de fen¨®is em microtangerinas (Citrus spp.) infectadas por Phytophthora parasitica
%A Jos¨¦ Ribamar Gusm£¿o Ara¨²jo
%A Fernando Broetto
%A Ary Apparecido Salibe
%A Eduardo Feichtenberger
%J Revista Brasileira de Bioci¨ºncias
%D 2008
%I Univerisade Federal do Rio Grande do Sul
%X The present research aimed to characterize and evaluate species and varieties of small-fruited mandarins of Tanaka¡¯s group (Citrus spp.) with potential use as rootstocks, in relation to infection to the Phytophthora parasitica, by means of foliar determination of peroxidase activity and total phenolics content. It was used the following species: C. reshni Hort. ex Tan., C. sunki Hort. ex Tan., C. pectinifera Tan., C. crenatifolia Lush., C. amblycarpa Ochese, C. aurantium L, C. reticulata Blanco and C. limonia Osb. The Center of Citrus Germoplasm of Botucatu and Cordeir¨®polis provide all plant material. Four resistant varieties to the stem rot and root rot infections: Pectinifera, Crenatifolia, Sun Chu Shu (clone Kat 1004) and Cleopatra (clone 1) were evaluated. Susceptible plants infected by P. parasitica presented higher activity of peroxidase, while phenolics contents were lower in susceptible group.
%K Biochemical markers
%K rootstocks
%K resistance
%K Marcadores bioqu¨ªmicos
%K porta-enxerto
%K resist¨ºncia
%U http://www.ufrgs.br/seerbio/ojs/index.php/rbb/article/view/896/525