%0 Journal Article
%T Tratamentos t¨¦rmico e qu¨ªmico de sementes de feijoeiro: efici¨ºncia na erradica£¿£¿o de Curtobacterium flaccumfaciens pv. flaccumfaciens e efeitos na qualidade fisiol¨®gica das sementes
%A Estefani
%A Renata C.C.
%A Miranda Filho
%A Reinaldo J.
%A Uesugi
%A Carlos H.
%J Fitopatologia Brasileira
%D 2007
%I Scientific Electronic Library Online
%R 10.1590/S0100-41582007000500011
%X the effect of thermo and chemotherapy on the eradication of curtobacterium flaccumfaciens pv. flaccumfaciens (cff) and on the physiological quality of seeds of common bean (phaseolus vulgaris) cv. p¨¦rola were tested. soaking times (30 min, 1 and 2 h) in water and in agrimaicin 500 solutions (copper sulphate, 500 g + oxytetracyclin, 30 g/kg of the product) in concentrations of 5 and 10 g/l of water; dry heat (60 and 70 oc for 1, 2, 3, 6 and 12 h); and heat of 60 oc/3 h on previously soaked seeds for 30 min, 1 and 2 h were tested. the vigor of seeds soaked in water for more than 1 h was affected. soaking the seeds (30 min, 1 and 2 h) in solution with 10 g of agrimaicin 500/l of water affected the length of the rootlet and the stem, whereas germination was affected only with 2 h. the treatment eliminated the bacterium from naturally infected seeds; however it was not effective in inoculated seeds (108 ufc/ml). dry heat (60 and 70 oc) for more than 3 h reduced significantly the vigor of the seeds and did not eliminate the bacterium. soaking the seeds for 30 min and 1 h + 60 oc/3 h affected the length of the stem and rootlet but did not eliminate the bacterium. two hours of soaking the seeds in water ¡À 60 oc/3 h reduced significantly the germination and the vigor; it also reduced significantly the cff in inoculated seeds, whereas it eliminated the bacterium in naturally infected ones.
%K phaseolus vulgaris
%K curtobacterium wilt
%K control
%K antibiotic
%K copper.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-41582007000500011&lng=en&nrm=iso&tlng=en