Resistance to bacterial halo blight in Arabica coffee lines derivative from the genotype C1195-5-6-2 under natural infection conditions

作者：Andreazi Elder^*; Sera Gustavo Hiroshi; Sera Tumoru; de Batista Fonseca Ines Cristina; Carducci Fernando Cesar; Shigueoka Luciana Harumi; dos Santos Willian Gabriel; Motta Pereira Carlos Theodoro

来源：Crop Breeding and Applied Biotechnology, 2018, 18(1): 110-115.

DOI：10.1590/1984-70332018v18n1n17

• Aramosa
• bacteriosis
• breeding
• Coffea arabica
• Pseudomonas syringae pv. garcae

The aim of this study was to identify resistance to bacterial halo blight in Arabica coffee lines carrying Coffea racemosa genes. Eighteen Arabica coffee lines derivative from the genotype C1195-5-6-2, and the cultivars IAPAR 59 and IPR 99 were evaluated for resistance to bacterial halo blight in two trials carried out in field conditions, in Londrina, PR, Brazil. The cultivars Mundo Novo IAC 376-4 and Catuai Vermelho IAC 81 were included as susceptible controls. Ten lines and the cultivar IAPAR 59 showed resistance to bacterial halo blight. The cultivar IPR 99 presented intermediate reaction, and the controls were very susceptible. This is the first study to show that lines derivative from the genotype C1195-5-6-2, which has C. racemosa genes, could be a source of resistance to bacterial halo blight in coffee breeding programs.

• 出版日期2018-3