Environmental Entomology (1985) 14, 531-534

R. Mark Beach, James W. Todd and S.H. Baker (1985)
Antibiosis of four insect-resistant soybean genotypes to the soybean looper (Lepidoptera: Noctuidae)
Environmental Entomology 14 (4), 531-534
Abstract: Larvae of the soybean looper, Pseudoplusia includens (Walker), were reared on insect resistant soybean genotypes GATIR 81-26, GATIR 81-306, GATIR 81-327, PI 423968, or the susceptible cultivar 'Ransom.' Larvae reared on the four resistant genotypes exhibited decreased foliage consumption and decreased pupal weight when compared to larvae reared on 'Ransom'. Larvae consumed less 81-327 foliage than that of any other genotype. Mortality of larvae was also significantly greater on 81-327 (58.8%) when compared to that on the other soybean genotypes (16-32%). Mean number of days to pupation ranged from 10.7 ('Ransom') to 12.3 (81-327). Adult P. includens oviposited significantly more eggs when reared on 'Ransom' foliage, while those reared on 423968, 81-26, and 81-327 produced the fewest numbers of eggs. The soybean genotype 81-327 exhibited the highest degree of antibiosis, with low-to-intermediate levels noted in 81-306, 81-26, and 423968.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): James W. Todd

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Chrysodeixis includens	Soybean (Glycine max)