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Effects of the resistance of nectariless and smooth leaf cotton on bollworms and its utilization

, : Effects of the resistance of nectariless and smooth leaf cotton on bollworms and its utilization. China Cottons (3): 46-47

Cage and field experiments in 1982-86 on 100 accessions of cotton, including nectariless + smooth leaf, nectariless + hairy leaf, and nectaried + hairy leaf cultivars or lines, showed that the nectariless + smooth leaf materials reduced the egg-mass of Heliothis armigera by 52.5-78.7% in cage tests and by 45.9 +or- 19.0% in the field. Nectariless + hairy leaf materials decreased egg-mass by 33.4% +or- 27.3% in the field.

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Related references

Schuster, M.; Maxwell, F., 1974: The impact of nectariless cotton on plant bugs, bollworms and beneficial insects. Proceedings Beltwide Cotton Production Research Conferences: 6-87

Davis, D.; Ellington, J.; Brown, J., 1973: Mortality factors affecting cotton insects. I. Resistance of smooth and nectariless characters in acala cottons to Heliothis zea, Pectinophora gossypiella, and Trichoplusia ni. Journal of environmental quality: 2 (4) 530-535

Davis D.D.; Ellington J.J.; Brown J.C., 1973: Mortality factors affecting cotton insects part 1 resistance of smooth and nectariless characters in acala cottons to heliothis zea pectinophora gossypiella and trichoplusia ni. Journal of Environmental Quality 2(4): 530-535

Thomson N.J.; Reid P.E.; Williams E.R., 1987: Effects of the okra leaf nectariless frego bract and glabrous conditions on yield and quality of cotton lines. Effects on yield and quality [of Gossypium hirsutum] associated with the glabrous leaf, frego bract, okra leaf and nectariless genes (singly and combined) were studied under two insecticide spray regimes (heavy and light) in field experiments repe...

Wilson, F.; George, B., 1982: Effects of okra-leaf, frego-bract, and smooth-leaf mutants on pink bollworm damage and agronomic properties of cotton Host-plant resistance, Pectinophora gossypiella. Crop science 22(4): 798-801

Kamel, A.A.M.; Shoeb, A.; Hanna, A.; Soliman, S., 1958: Studies of the effects of some new insecticides on the cotton leaf worm, and bollworms. Two phosphorous compounds and several chlorinated hydrocarbons were tested singly or in combination against cotton pests in randomized blocks and in semi large scale tests in 2 series of experiments. Counts were made of cotton leaf worm larvae, bo...

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Meredith, W.R.Jr, 1998: Registration of eight sub-okra, semi-smooth, and nectariless near-isolines of DES 119 cotton germplasm. Crop Science 38(6): 1725, Nov -Dec

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