Técnicas de avaliação da resistência de ameixeira à Xanthomonas arboricola pv pruni

Content Provider	Semantic Scholar
Author	Citadin, Idemir Bassani, Marcelo Henrique Santos, Idalmir Dos Mazaro, Sérgio Miguel Raseira, Maria Do Carmo Bassols Danner, Moeses Andrigo
Copyright Year	2005
Abstract	Bacterial spot of Japanese-type plum and others stone seed fruits, caused by Xanthomonas arboricola pv. pruni, is a serious disease in warm and humid environments. Chemical control is costly and often ineffective. Therefore, in areas where bacterial spot is a problem, the use of resistant cultivars is an important part of a management program for reducing the risk of loss from this disease. However, the selection of resistant genotypes is difficult because there are no rapid and reliable methods to evaluate the severity of disease on leaves and twigs. The aim of this work was to test screening techniques to identify resistant genotypes under field conditions and to classify three Japanese plum varieties according to their reaction to bacterial spot. Among the screening techniques compared, leaf severity was more reliable than the mean number of leaf spots. The number of twig cankers per meter and the mean of cankers in the first 10 cm from the twig base were both reliable, but the last technique is faster and easier to apply. 'Irati' exhibited the highest level of resistance, among the other cultivars.
Starting Page	390
Ending Page	393
Page Count	4
File Format	PDF HTM / HTML
DOI	10.1590/S0100-29452005000300013
Alternate Webpage(s)	http://www.scielo.br/pdf/rbf/v27n3/27781.pdf
Alternate Webpage(s)	https://doi.org/10.1590/S0100-29452005000300013
Volume Number	27
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article