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2010•Journal of Entomological ResearchRequires access

Resistance in maize to Chilo partellus swinhoe (Lepidoptera: Crambidae)

Jawala Jindal, N Hari

Open publisher page 3 citations

Abstract

Testing maize cultivars for resistance to C. partellus could be better done by infesting them at 2.5 wk after germination as different components of resistance were expressed at this stage. The infestation with neonate larvae resulted in higher foliage damage and greater dead hearts than with egg masses. The regression estimate of all the cultivars for functional plant loss index on larval dry weight indicated that plants of CM 500 possess antibiosis and tolerance, whereas JH 3459 showed tolerance against larval infestation. Larval survival (60.0%) and leaf area fed (107.2 mm2) were less on cultivar CM 500.

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Testing maize cultivars for resistance to C. partellus could be better done by infesting them at 2.5 wk after germination as different components of resistance were expressed at this stage. The infestation with neonate larvae resulted in higher foliage damage and greater dead hearts than with egg masses. The regression estimate of all the cultivars for functional plant loss index on larval dry weight indicated that plants of CM 500 possess antibiosis and tolerance, whereas JH 3459 showed tolerance against larval infestation. Larval survival (60.0%) and leaf area fed (107.2 mm2) were less on cultivar CM 500.

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Available abstract

Testing maize cultivars for resistance to C. partellus could be better done by infesting them at 2.5 wk after germination as different components of resistance were expressed at this stage. The infestation with neonate larvae resulted in higher foliage damage and greater dead hearts than with egg masses. The regression estimate of all the cultivars for functional plant loss index on larval dry weight indicated that plants of CM 500 possess antibiosis and tolerance, whereas JH 3459 showed tolerance against larval infestation. Larval survival (60.0%) and leaf area fed (107.2 mm2) were less on cultivar CM 500.

Key concepts: Chilo, Crambidae, Infestation, Larva, Cultivar, Lepidoptera genitalia, Antibiosis, Biology

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