Soybean Resistance to the Southern Green Stink Bug, Nezara viridula

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In 1973,654 soybean lines were field-screened for resistance to pentatomid pests in South Carolina. Twenty-seven lines were selected and tested in 1974 in replicated field plots. None was highly resistant under heavy feeding pressure by Nezara virudula (L.), Acrosternum hilare (Say), and Euschistus spp., with seed damage ranging from 30.2 to 84.2%. Five of these lines and 3 insect resistant plant introductions (PIs) 171451, 227687, and 229358 were tested for development, mortality, and weight gain of N. viridula nymphs confined over pods in the field and under laboratory conditions.

All 3 PIs exhibited resistance to N. viridula in 2 or 3 of the forced-feeding tests. PI229358 was the most consistently resistant in all tests, causing significantly higher mortality, longer development, and lower weight gain for nymphs compared to those on ‘Bragg’. The performance of some of the breeding lines was variable among the tests but showed that the resistance can be transferred by crosses with commercial cultivars.

Document Type: Research Article

Publication date: August 1, 1979

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