441 



weight (<2000) for the active constituent (s) and eliminated proteins, 

 large peptides, and polysaccharides with high molecular weights. Moderate 

 feeding activity was found in methanol extracts of cotton buds in a fraction 

 containing acidic components, but no active phenolic or carbosylic acid 

 was isolated. Strong feeding activity was retained after fractions from 

 methanol extracts were treated to remove or degrade flavonoid glycosides 

 (and other glycosides), although 2 flavonoids with modest activity were 

 isolated. 



863. ; Frye, J.; Shealy, Y. F.; Hedin, P. A.; Thompson, A. C; and 

 Minyard, J. P. 1968. Constituents of the cotton bud. XI. Studies of a 

 feeding-stimulant complex from flower petals for the boll weevil. J. 

 Econ. Entomol. 61: 664-667. 



Analogous extracts of the flowers and buds of cotton, Gossypium hirsutum L., 

 were compared as feeding stimulants for the boll weevil, Anthonomus grandis 

 Boheman. The flower extracts and their fractions w^re examined by paper, 

 column, thin-layer, and gel-permeation chromatography and active fractions 

 were obtained. A methanol-extrac table active substance was concentrated 

 by precipitation with lead acetate, and another highly active fraction 

 was recovered by re-extraction with methanol. Examination of the acidic, 

 ether-extractable components in methanol extracts of flowers and buds in- 

 dicated that these fractions from buds were more stimulating than similar 

 extracts of flowers. 



864. Sukkestad, D. R. ; Cardwell, D. L.; Pomonis» J. G. ; and Nelson, D. R. 



1972. Quantitative analysis of busulfan in boll weevils by gas 



>* 



chromatography. J. Econ. Entomol. 65: 353-356. 



Recovery of busulfan (1,4-butanediol dimethanesulfonate) from Anthonomus 



grandis Boheman that had been injected or topically treated was determined 



