Rooting of healthy and CVC-affected 'Valência' sweet orange stem cuttings, through the use of plant regulators

Citrus variegated chlorosis (CVC) is a disease caused by Xylella fastidiosa. Using different concentrations of plant regulators, such as auxins (indole-3-butyric acid) and gibberellic acid biosynthesis-inhibitor (paclobutrazol), physiological rooting capacity of healthy and CVC-affected stem cuttings were evaluated in order to investigate the importance of plant hormone imbalance and xylem occlusion in plants with CVC. The percentages of dead, alive and rooted cuttings, cuttings with callus and mean number of roots per cuttings did not show statistical differences in response to the distinct concentrations of synthetic plant regulators. There were differences only between healthy and CVC-affected cuttings. This showed the importance of xylem occlusion and diffusive disturbances in diseased plants, in relation to root initiation capacity and hormonal translocation in the plant tissue.

Bibliographic Details

Main Authors:	Habermann,Gustavo, Alvarez,Rita de Cássia Félix, Modesto,Júnior Cesar, Fortes,Andréa Maria Teixeira, Rodrigues,João Domingos, Ono,Elizabeth Orika
Format:	Digital revista
Language:	English
Published:	Instituto de Tecnologia do Paraná - Tecpar 2006
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000100004
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