Reaction of peach tree genotypes to bacterial leaf spot caused by Xanthomonas arboricola pv. pruni

被引：9
|
作者：
Sousa Medeiros, Jose Gilberto [2 ]
Citadin, Idemir [1 ]
dos Santos, Idalmir [1 ]
Assmann, Andre Paulo [3 ]
机构：
[1] UTFPR, Depto Agron, BR-85503390 Pato Branco, PR, Brazil
[2] UTFPR, Programa Posgrad Agron, BR-85503390 Pato Branco, PR, Brazil
[3] Agropantanal, BR-79560000 Chapadao Do Sul, MS, Brazil
来源：
SCIENTIA AGRICOLA | 2011年 / 68卷 / 01期
关键词：
disease resistance; disease severity; SUSCEPTIBILITY;
D O I：
10.1590/S0103-90162011000100009
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
Bacterial leaf spot (BLS), caused by Xanthomonas arboricola pv. pruni, is one of the most important diseases in Brazilian peach [Prunus persica (L.) Batsch] orchards and all over the world. The main objective of this study was to evaluate for BLS sensitivity of peach genotypes. Evaluations of thirty genotypes were carried out during the onset of the disease, for incidence, severity and defoliation, in field conditions. Pearson's correlations between the percentage of defoliation and leaf severity rating were performed. Genotypes 'Conserva 985', 'Conserva 871', 'Conserva 1129', and 'Tropic Snow', as resistance sources, and 'Conserva 1153', 'Bonao', 'Conserva 1125', and 'Atenas', as susceptible to BLS, were submitted to detached-leaf bioassay and greenhouse evaluation. The peach genotypes showed different reactions to the BLS, and none was immune to the pathogen. 'Conserva 985' and 'Conserva 1129' confirmed resistance responsiveness while 'Conserva 1153', 'Conserva 1125' and 'Atenas' were found susceptible for the detached-leaf bioassay.
引用
收藏
页码：57 / 61
页数：5
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