Efeito de sinigrina aplicada em folhas de br芍ssicas sobre caracter赤sticas biol車gicos de Plutella xylostella (L.) (Lepidoptera: Plutellidae)

作者：Carvalho; Jackeline da Silva; Bortoli; Sergio Antonio De; Thuler; Robson Thomaz; Goulart; Roberto Marchi; Volpe; Haroldo Xavier Linhares

来源：Acta Scientiarum - Agronomy, 2010.

DOI：10.4025/actasciagron.v32i1.75310.4025/actasciagron.v32i1.753

• diamondback moth
• glucosinolates
• cabbage
• broccoli
• reproductive potential.

the objective of this work was to evaluate the effect of sinigrin applied to cabbage and broccoli leaves of biological aspects of plutella xylostella. two brassica cultivars, cabbage da georgia and broccoli ramoso piracicaba precoce, were used and were treated with the following sinigrin solutions: 0.2, 0.4, 0.8, 1.6 and 3.2 mg ml-1 in solution 5% of tween 20ˋ and a control with tween solution. duration and viability of larval and pupal periods, pupal weight, longevity and sex ratio, female fertility, incubation period and egg viability were evaluated. the corrected reproductive potential index (prc) was also calculated. the means were analyzed by the multivariate analysis of grouping and of main components. the prc treatments presented 0.2 mg ml-1 in cabbage with larger reproductive potential. the multivariate analysis provided discrimination of treatments regarding the smaller tested concentration. by the results it is possible to conclude that low concentrations of sinigrin, in cabbage and broccoli, allow better development for p. xylostella