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首页> 外文期刊>Australian Journal of Crop Science >Behavior of 'IPR 100' and 'Apoat? IAC 2258' coffee cultivars under different infestation levels of Meloidogyne paranaensis inoculum
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Behavior of 'IPR 100' and 'Apoat? IAC 2258' coffee cultivars under different infestation levels of Meloidogyne paranaensis inoculum

机译：“ IPR 100”和“ Apoat”的行为？ IAC 2258'咖啡品种在不同水平的拟南芥接种物的侵染下

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This study aimed to evaluate the behavior of the cultivars ‘IPR 100’ and ‘Apoat? IAC 2258’ under different infestation levels of Meloidogyne paranaensis inoculum. The experiment was conducted in a randomized block design and 3 × 6 factorial arrangement (three cultivars and six inoculum levels). The following inoculum levels were used: 0; 500; 1,500; 3,000; 5,000; and 8,000 eggs plant-1. The root fresh weight and number of eggs were evaluated at 110 days after inoculation. The number of eggs and second-stage juveniles per gram of root (nematodes g-1), reproduction factor (RF), reduction in reproduction factor (RRF), and host susceptibility index (HSI) were determined. The RF, RRF, and HSI were used to classify the resistance levels of the cultivars. The results showed significantly lower levels of nematodes g-1 in IPR 100 and ‘Apoat?’ compared with that of the ‘Catuaí’ as check cultivar. The ‘IPR 100’ and ‘Apoat? IAC 2258’ cultivars exhibited resistance to M. paranaensis regardless of the inoculum level used. Based on the nematodes g-1, RF, RRF, and HSI, the ‘IPR 100’ cultivar was more resistant to M. paranaensis than ‘Apoat? IAC 2258.' Under the experimental conditions adopted here, the initial populations of 1,500 and 3,000 eggs plant-1 are the most suitable for testing resistance to M. paranaensis. However, 3,000 eggs plant-1 was the most efficient population because it can be used to classify the cultivars into different levels of resistance.
机译：这项研究旨在评估“ IPR 100”和“ Apoat？”品种的行为。 IAC 2258’在不同水平的拟南方根结线虫接种量下。实验以随机区组设计和3×6因子排列（三个品种和六个接种水平）进行。使用了以下接种物水平：0; 500; 1,500; 3,000; 5,000;和8,000个鸡蛋植株1。接种后110天评估根的鲜重和卵数。确定每克根（线虫g-1）的卵和第二阶段幼虫的数量，繁殖因子（RF），繁殖因子减少（RRF）和宿主敏感性指数（HSI）。 RF，RRF和HSI用于分类品种的抗性水平。结果表明，与“Catuaí”作为检查品种相比，IPR 100和“ Apoat”中的线虫g-1含量显着降低。 “ IPR 100”和“ Apoat？无论使用何种接种量，IAC 2258'品种均对Paranaensis产生抗性。基于线虫g-1，RF，RRF和HSI，“ IPR 100”品种比“ Apoat”品种对Paranaensis的抗性更高。 IAC2258。”在此处采用的实验条件下，最初的1,500和3,000个鸡蛋植株1的初始种群最适合测试对Paranaensis的抗性。但是，有3,000个卵植物1是最有效的种群，因为它可以用于将品种分类为不同的抗性水平。

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