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首页> 美国卫生研究院文献>Insects >Leaf Morphological and Biochemical Responses of Three Potato (Solanum tuberosum L.) Cultivars to Drought Stress and Aphid (Myzus persicae Sulzer) Infestation
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Leaf Morphological and Biochemical Responses of Three Potato (Solanum tuberosum L.) Cultivars to Drought Stress and Aphid (Myzus persicae Sulzer) Infestation

机译：三种马铃薯（Solanum tuberosum L.）品种对干旱胁迫和蚜虫（Myzus persicae Sulzer）侵染的叶片形态和生化响应

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摘要

Drought stress on plants can cause cellular water deficits and influence the physiology of host plants, which alter the performance of insect pests. This study was conducted to determine the effect of drought and aphid ( Sulzer) infestation on three potato ( L.) genotypes under greenhouse conditions. A factorial experiment involving three potato genotypes, two levels of drought, and two levels of aphid infestation was conducted. The potato genotypes possessed different levels of tolerance to drought and are described as tolerant ( ), moderately tolerant ( ), and sensitive ( ). Sixty-day-old potato plants were infested with aphid nymphs and monitored for 20 d. There was a significant variety × drought × aphid interaction effect on the parameters measured. The genotype , which is sensitive to drought, exhibited greater tolerance to aphid infestation under drought or no drought conditions than the other genotypes. This genotype also exhibited poor host acceptance and the aphid survival rate, colonization success, and average daily reproduction were low. , which is tolerant to drought, was highly susceptible to aphid infestation and exhibited high host acceptance and greater aphid survival rate, colonization success, and average daily reproduction compared to the other genotypes. This study demonstrates that the biochemical and morphological traits that confer drought tolerance in potato do not necessarily confer aphid tolerance.
机译：植物的干旱胁迫会导致细胞水分不足并影响寄主植物的生理，从而改变害虫的性能。进行这项研究来确定干旱和蚜虫（Sulzer）侵染对温室条件下三种马铃薯（L.）基因型的影响。进行了涉及三个基因型，两个干旱水平和两个蚜虫侵害水平的析因试验。马铃薯基因型对干旱具有不同程度的耐受性，被描述为耐性（），中度耐性（）和敏感（）。 60天大的马铃薯植株被蚜虫若虫侵染，并监测20天。测得的参数存在显着的×干旱×蚜虫相互作用。对干旱敏感的基因型对干旱或无干旱条件下的蚜虫侵害表现出比其他基因型更大的耐受性。该基因型还表现出差的宿主接受性，并且蚜虫存活率，定植成功率和平均每日繁殖率都很低。与其他基因型相比，它耐旱，对蚜虫侵染高度敏感，并显示出较高的寄主接受率和更高的蚜虫存活率，定植成功率和平均日繁殖能力。这项研究表明，赋予马铃薯耐旱性的生化和形态特征不一定赋予蚜虫耐性。

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