Characterization of Resistance to the Mexican Rice Borer (Lepidoptera: Crambidae) Among Sugarcane Cultivars

Overview

Journal Insects

Specialty Biology

Date 2022 Oct 27

PMID 36292838

Authors

Leonardo D Salgado

Blake E Wilson

Hannah J Penn

Randy T Richard

Michael O Way

Affiliations

Soon will be listed here.

Abstract

Cultivar resistance is an essential management strategy for the Mexican rice borer, (Dyar), in sugarcane in the USA, but resistance mechanisms are poorly understood. Resistance was evaluated among Louisiana's (USA) commercial sugarcane cultivars and experimental clones through field screenings, greenhouse trials, and a diet incorporation assay. Cultivars L 01-299 and HoCP 85-845 had the lowest borer injury levels, while HoCP 00-950 and L 12-201 were among the most heavily injured in field and greenhouse trials. The variability of results between the two field trials suggests that a genotype × environment interaction might affect the expression of resistance. Oviposition did not differ among evaluated cultivars in the greenhouse choice study. Results from the no-choice experiment showed that neonatal establishment differed among cultivars by up to 3-fold. In a diet incorporation assay, all cultivars reduced larval weight up to 86.5% and increased days to pupation by 1.8-fold relative to the diet-only control. Collectively, these results suggest that Louisiana's sugarcane breeding germplasm contains various resistance levels to emphasizing the importance of screening cultivars before they are released to growers. Future studies should try to determine the influence of environmental factors on resistance expression.

Citing Articles

Influence of Temperature and Photoperiod on Survival and Development of (Lepidoptera: Crambidae).

Villegas J, Diaz R, Stout M, Papitchaya F, Wilson B Insects. 2025; 15(12.

PMID: 39769517 PMC: 11680016. DOI: 10.3390/insects15120915.

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