Induced resistance to Mexican bean beetles in soybean: variation among genotypes and lack of correlation with constitutive resistance

Reference Report for IND22045986

Title:	Induced resistance to Mexican bean beetles in soybean: variation among genotypes and lack of correlation with constitutive resistance
Authors:	Underwood, N., Morris, W., Gross, K., Lockwood, J.R. III.
Source:	Oecologia 2000, 122(1):83-89
Abstract:	Fourteen genotypes (varieties) of soyabean (Glycine max) were screened for levels of induced resistance to Mexican bean beetle (Epilachna varivestis) damage, and a subset of 6 of these varieties was screened for levels of constitutive resistance to Mexican bean beetles. Experiments were carried out in the greenhouse, with damage imposed by Mexican bean beetle larvae, and levels of resistance measured by a choice test bioassay with adult beetles. There was significant variation among soyabean genotypes in levels of both induced and constitutive resistance. No significant correlation was found between levels of induced and constitutive resistance measured in the same genotypes. The paper compares these results to past work on resistance in the soyabean-Mexican bean system, considers the implications of variation in both types of resistance for plant-herbivore interactions in agricultural and natural systems, and discusses the relationship between induced and constitutive resistance.

Funded by the USDA-ARS. Developed by the USDA-ARS SoyBase and Legume Clade Database group at the Iowa State University, Ames, IA

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