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Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (9): 114-119.doi: 10.11924/j.issn.1000-6850.casb16050092

Special Issue: 烟草种植与生产

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Different Effects on Growth Characteristics of Tobacco Plants Infested by Bemisia tabaci Biotype B and Trialeurodes vaporariorum

  

  • Received:2016-05-16 Revised:2017-03-01 Accepted:2016-09-01 Online:2017-03-28 Published:2017-03-28

Abstract: The paper objective is to compare the effect of growth characteristic of tobacco after feeding by Bemisia tabaci Biotype B and Trialeurodes vaporariorum respectively on tobacco plants, and to determine the difference defense response of tobacco plants and temporal effect by two whitefly induced, and to explore its role in interspecific competition between B. tabaci and T. vaporariorum and its possible mechanism. The difference effects of growth characteristic of tobacco after feeding different times by B. tabaci and T. vaporariorum respectively get though using ruler measurement and oven drying weighing method. The results showed that the significant difference of tobacco growth and exist temporal effect after feeding by B. tabaci and T. vaporariorum, respectively, under the whitefly population density of reached plant induced defense. Compared with the control of tobacco, the tobacco feeding by B. tabaci had no negative effects on growth for 5 d, and but had negative effects on plant growth start for 10 d after feeding by B. tabaci and had gradually increase the adverse effects of tobacco follow the extension of B. tabaci feeding time. The tobacco plants height were decreased by 6.9 cm and 8.5 cm, and the average internode were decreased by 0.6cm and 0.53cm, and the leaf number of tobacco plants was decreased by 2.1 leaf/plant and 2.6 leaf/plant, and the dry weight of per unit areas were decreased by 0.99 mg/cm2 and 1.01 mg/cm2 after previous feeding by B. tabaci for 15 d and 20 d, respectively. The tobacco feeding different times by T. vaporariorum had no negative effects. Compared with tobacco after feeding by T. vaporariorum, B. tabaci feeding tobacco can induce specific inhibition responses, B. tabaci -elicited declines in growth may result from the re-allocation of resources from growth to defense.