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Performance and preference of sugarcane borer, D iatraea saccharalis , on rice cultivars
Author(s) -
Sidhu Jaspreet K.,
Stout Michael J.,
Blouin David C.
Publication year - 2013
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/eea.12111
Subject(s) - biology , cultivar , diatraea saccharalis , pest analysis , larva , horticulture , agronomy , botany
The sugarcane borer, D iatraea saccharalis ( F abricius) ( L epidoptera: C rambidae), is a major agronomic pest in the southeastern USA . This study was conducted to investigate the performance of D . saccharalis on eight rice cultivars widely grown in L ouisiana and to assess the relationship between oviposition preference and offspring performance. In a previous study, oviposition preference of sugarcane borers was found to vary on the same eight rice cultivars. In this study, variation in larval performance on the eight cultivars was observed. The overall performance of larvae in terms of relative growth rate and boring success of larvae was highest on P riscilla and C ocodrie. Larval performance was lower on the hybrid XL 723, the C learfield (herbicide‐resistant) variety CL 161, and the medium grain B engal. Also, larvae took more time to enter into the stem of the hybrid XL 723 compared with C ocodrie. Significant positive correlations were observed among relative growth rate and boring success and between larval performance and oviposition preference. Significant positive correlations among measures of larval performance and oviposition preference suggest the operation of a common resistance mechanism. Results in laboratory and greenhouse extended into the field, where C ocodrie and C heniere were the most damaged cultivars, whereas CL 161 and the medium grain Jupiter were least injured in terms of average number of stem borer entry/exit holes per plant. Results from this study could contribute to the use of resistant cultivars in an integrated management program for stem borers and the resistant cultivars identified in this study could be used as sources of resistance in breeding programs for resistance against stem borers.