Effect of 6-Methoxybenzoxazolin-2-one (MBOA) on the Reproduction Rate of the Grain Aphid (Sitobion avenae F.)
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- 作者：Lars M. Hansen
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2006
- 出版时间：February 22, 2006
- 年：2006
- 卷：54
- 期：4
- 页码：1031 - 1035
- 全文大小：46K
- 年卷期：v.54,no.4(February 22, 2006)
- ISSN：1520-5118
文摘
Partial host-plant resistance could make a substantial contribution to reducing the damage causedby economically important grain aphids and, therefore, to reduced insecticide use. Naturally occurringhydroxamic acids, in particular 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA), have beenshown to be involved in the resistance of cereals to insects. DIMBOA is unstable in aqueous solutionsand has been reported to decompose to 6-methoxybenzoxazolin-2-one (MBOA). MBOA was testedon grain aphids living on artificial diet incorporated with MBOA. From 0 to 0.1 mM, the intrinsic rateof increase (rm) increased. From 0.1 to 0.3 it decreased by 73%. The rm was calculated to be 0 at 1.0mM. Consequently, even low concentrations of MBOA may reduce the aphid multiplication to a levelbelow the economic damage threshold. Therefore, it is possible to breed wheat varieties with asufficiently high content of DIMBOA to decrease grain aphid populations.Keywords: Aphids; Sitobion avenae; artificial food; antibiosis; DIMBOA; MBOA