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首页> 外文期刊>Australian Journal of Crop Science >Resistance to red mite in Coffea arabica genotype introgressed with Coffea racemosa genes
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Resistance to red mite in Coffea arabica genotype introgressed with Coffea racemosa genes

机译:沙蚕咖啡基因渗入的阿拉伯咖啡基因型对红螨的抗性

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The aim of this study was to assess the resistance to red mite (Oligonychus ilicis) in Coffea arabica genotypes with introgression of genes from a different species (Coffea racemosa). The experiment was conducted in a greenhouse at IAPAR (Londrina, PR, Brazil), between January 2016 and January 2017. The experiment was conducted in a completely randomized design with five genotypes, 12 replications of one plant per plot. The C. arabica cultivars IPR 100, IPR 99 and IPR 103 were evaluated as well as an F4 Arabica coffee line IAPAR H0113-40-26-10 with introgressed C. racemosa genes. Catuaí Vermelho IAC 99 cultivar, which is a pure C. arabica, was used as a susceptible control. In conditions of high natural infestation of red mite, the resistance of coffee genotypes was evaluated using a standard visual evaluation in January 2017. This evaluation was based on the percentage of leaf area with typical symptoms caused by this mite. Only one genotype, the F4 line IAPAR H0113-40-26-10 showed resistance to the red mite because present less leaf area with symptoms compared to other genotypes. The Arabica coffee cultivars IPR 99, IPR 100 and IPR 103 are as susceptible to red mite as to the susceptible control Catuaí Vermelho IAC 99.
机译:这项研究的目的是评估阿拉伯咖啡基因型对红螨(Oligonychus ilicis)的抗性,并分析不同物种(Coffea racemosa)基因的基因渗入。该实验在2016年1月至2017年1月之间于IAPAR(巴西,Londrina,巴西)的温室中进行。该实验以完全随机的设计进行,具有5个基因型,每块地重复12株植物。评价了阿拉伯茶的栽培种IPR 100,IPR 99和IPR 103,以及带有渗入的消旋果蝇基因的F4阿拉比卡咖啡系IAPAR H0113-40-26-10。将纯净的阿拉伯衣原体CatauíVermelho IAC 99品种用作易感对照。在红螨自然高发的情况下,于2017年1月使用标准的目测评估来评估咖啡基因型的抗性。该评估基于由这种螨引起的典型症状的叶面积百分比。 F4系IAPAR H0113-40-26-10仅是一种基因型,显示出对红螨的抗性,因为与其他基因型相比,出现症状的叶子面积更少。阿拉比卡咖啡品种IPR 99,IPR 100和IPR 103与易感对照CatuaíVermelho IAC 99一样易受红螨侵害。

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