Evaluation of antixenosis in soybean against Spodoptera litura by dual-choice assay aided by a statistical analysis model: Discovery of a novel antixenosis in Peking

The method for evaluating soybean (Glycine max) antixenosis against the common cutworm (Spodoptera litura) was developed based on a dual-choice assay aided by a statistical analysis model. This model was constructed from the results of a dual-choice assay in which Enrei, a soybean cultivar susceptib...

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Bibliographic Details
Published in:Journal of Pesticide Science 2021/05/20, Vol.46(2), pp.182-188
Main Authors: Yano, Mariko, Inoue, Takato, Nakata, Ryu, Teraishi, Masayoshi, Yoshinaga, Naoko, Ono, Hajime, Okumoto, Yutaka, Mori, Naoki
Format: Article
Language:English
Subjects:
antixenosis
Assaying
Cultivars
Glycine max
Larvae
Mathematical models
Maximum likelihood estimation
Regular
Soybeans
Spodoptera litura
Statistical analysis
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Summary:The method for evaluating soybean (Glycine max) antixenosis against the common cutworm (Spodoptera litura) was developed based on a dual-choice assay aided by a statistical analysis model. This model was constructed from the results of a dual-choice assay in which Enrei, a soybean cultivar susceptible to S. litura, was used as both a standard and a test leaf disc for 2nd–5th instar larvae. The statistical criterion created by this model enabled the evaluation of the presence of antixenosis. This method was applied to four soybean varieties, including Tamahomare (susceptible), Himeshirazu (resistant), IAC100 (resistant), and Peking (unknown), as well as Enrei. Subsequently, the degrees of antixenosis were also compared by F-test, followed by maximum likelihood estimation (MLE). According to the results, the antixenosis of Tamahomare, Himeshirazu, and IAC100 was statistically reevaluated and Peking exhibited a novel antixenosis, which was stronger for 3rd–5th instar larvae than for 2nd instar.
ISSN:1348-589X
1349-0923
DOI:10.1584/jpestics.D21-006