عنوان مقاله [English]
This study was conducted for evaluation of the infestation levels in plants of six commercial cultivars of potato including: Impala, agria, savalan, florida, emeraude and markies to the tomato leafminer, Tuta absoluta (Meyrick) under field condition in Ardabil region during 2013 and 2014. The number of mines and live larvae per plant, the number of mines per leaf, dry weight of foliage and tubers, and the percent reduction in dry weight of foliage and tubers per plant in six potato cultivars were analyzed as a randomized complete block design. Our results indicated that amongst the six tested cultivars, emeraude and markies with the highest number of mines and larvae, and the greatest percent reduction in dry weight of foliage and tubers have the greatest relative suitability to the tomato leafminer. Whereas, florida with the lowest number of mines and larvae, and the lowest percent reduction in dry weight of foliage and tubers had the lowest relative suitability to the tomato leafminer. In savalan, with the medium number of mines and larvae, the percent reduction in dry weight of foliage and tubers was significantly lower than other cultivars (with florida). These results likely reflect the highest relative tolerance of savalan to tomato leafminer among the six tested cultivars of potato. Therefore, savalan (with the highest relative tolerance) and florida (with the least relative suitability) have potential for use in the sustainable management of T. absoluta in potato fields.