Abstract:Experiments were carried out to study the relationship between the quantity of honeydew and rmof green peach aphid infesting 50 tobacco varieties in the field from 1990 to 1992. The results showed that the range for rm is from 0.102 to 0.498, for honeydew secreted during 24 hours is 3.862 mm2/aphid to 29. 356 mm2/aphid. It also showed that the resistance of tobacco varieties to green peach aphid manifested in the reduction of net reproductive rate. Both rm and honeydew had significant relations to the populati… Show more
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