标题：Effects of Different Systemic Insecticides in Carotenoid Content, Antibacterial Activity and Morphological Characteristics of Tomato (Solanum lycopersicum var Diamante)
期刊名称：Asia Pacific Journal of Multidisciplinary Research
印刷版ISSN：2350-7756
电子版ISSN：2350-8442
出版年度：2014
卷号：2
期号：1
页码：209-213
出版社：Lyceum of the Philippines University - Batangas
摘要：This study aimed to determine the effects of different systemic insecticides in tomato(Lycopersicon esculentum var. Diamante). The study also assessed different systemic insecticides used in otherplants in their effectiveness and suitability to tomato by evaluating the carotenoid content and antibacterialactivity of each insecticide. Morphological characteristics such as the weight, the number and the circumferenceof tomato fruits and the height of the plant were also observed. Moreover, the cost effectiveness was computed.Treatments were designated as follows: Treatment 1- plants sprayed with active ingredient (a.i.) cartaphydrochloride; Treatment 2 - plants sprayed with a.i. indoxacarb; Treatment 3- plants sprayed with a.i.chlorantraniliprole and thiamethoxam; Treatment 4 - plants sprayed with a.i. dinotefuran (positive control); andTreatment 5 - no insecticide applied. The experimental design used was Randomized Complete Block Design(RCBD) with three replications. The first three systemic insecticides with such active ingredient were not yetregistered for tomato plant. Statistical analyses show that there were no significant differences among theweight, the number and the circumference of tomato fruits and the height of the plant for each treatment. Resultsshowed that treatments 1, 2, 3, 4 and 5 extracts have 49.74, 44.16, 48.19, 52.57 and 50.60 μg/g of totalcarotenoids (TC), respectively. Statistical analysis shows that there no significant differences in the TC contentof each treatment. The antibacterial activity of each plant sample showed no significant differences amongtreatments. Thin layer chromatographic analysis revealed that there were equal numbers of spots for all theplant samples.The study concluded that systemic insecticide with a.i. cartap hydrochloride be introduced to thefarmers as insecticide for tomato plant since it shows comparable effect with the registered insecticide (T4) basedon the morphological characteristics, total carotenoid content, antibacterial activity and found to be the mostcost-effective.
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