Effects on Growth and Development of Ostrinia furnacalis by Feeding with Different Host Plants

In order to study the effects on the growth and development of Ostrinia furnacalis fed with different host plants, Zea mays, Saccharum officinarum, Z.mays+S. officinarum, Phaseolus vulgaris and Chrysanthemum coronarium were studied to affected the developmental period, weight, instars and fecundity in laboratory. Results showed that the instars of ACB fed with different plants differed significantly on the same conditions. There were 77.8% individuals fed with P.vulgaris went through 4 instars, 90% individuals fed with Z.mays ,S. officinarum and Z. mays+S. officinarum went through 5 instars, and all individuals fed with C. coronarium went through 6 instars. The larvae developmental period of F1 generation feeding on P. vulgaris was minimum, only was 12.52 d, other feeding on Z.mays and Z.mays + S. officinarum were longer, which was 31.0 and 28.17 d respectively.The larvae developmental period of F2 generation was shorter than the F1 generation. Weight of mature larvae of F1 generation feeding on P. vulgaris was maximun, which was 56.13 mg, and heavier than other treatments, while had no significantly difference with feeding with S. officinarum (51.80 mg).Those fed with Z.mays + S. officinarum were lowest, only was 27.88 mg, had no significantly difference with those fed with S. officinarum(34.31 mg). Fecundity of various plants showed significantly different, C. coronarium treatment was much higher than other treatments with 217 eggs laid per female. The egg hatching rate of F2 generation was lower than F1 generation, and the sec ratio of F2 generation shows that there were more females in corn treatment, P. vulgaris treatment and C. coronarium treatment and more males in S. officinarum treatment and Z.mays + S. officinarum treatment. The results provided basic data to further study the population differentiation, and control ACB by using crop diversity.