55 



plant genotype; and (3) 'Triple Hallmark Sea Island,' 'Seaberry Sea Island,' 



their F, hybrid, 'Brown Egyptian', and Seaberry Sea Island X Brown Egyptian 



were less preferred for oviposition by the boll weevil than 'Deltapine Smooth 

 Leaf.' 



95. ; Jenkins, J. N. and Maxwell, F. G. 1968. A boll weevil oviposition 

 suppression factor on cotton. Crop Sci. 8: 647-649. 



The rate of boll weevil, Anthonomus grandis Bpheman, oviposition was tested on 

 252 cotton lines, Gossypium hirsutum L. , and G. barbadense L. , in a nonrepli- 

 cated mass screening procedure. Boll weevil oviposition was reduced in 26 

 lines. Replicated tests were performed on six of these by using the A & M 

 laboratory strain and a Mississippi field strain of weevils. The two strains 

 ranked the six cotton lines in relatively the same order. We obtained F, 

 hybrids of each of the 26 lines by crossing them with 'Deltapine Smooth Leaf 

 (DPSL) and tested the hybrids for oviposition with the A & M strain in re- 

 plicated tests. Significant differences were found. Oviposition values 

 ranged from 49 to 178% of the commercial DFSL parental line. 'S. I. Seaberry' 

 produced the lowest oviposition rate. Inheritance studies with S. I. Seaberry 

 X DPSL were conducted in the Fj^, F2, and backcross progeny. Difficulty was 

 experienced in testing individual F2 J^ckcross plants since the test required 

 jmany- squares. -We did, however, determine that the ability of S. I. Seaberry 

 to suppress boll weevil oviposition was under genetic control. 



96. Bull, D. L. 1968. Metabolism of 0,0-dimethyl phosphorcdithioate S^-ester 



2 

 with 4-(mercaptomethyl)-2-methoxy-A'^-l, 3,4-thiadiazolin-5-one (Geigy GS= 



13005) in plants and animals. J. Agric. Food Chem. 16: 610-616. 



Relatively small amounts of Geigy GS-13005- [0,0-dimethyl phosphorodithioate 



2 

 S-ester with 4-(raercaptomethyl)-2-methoxy-^ -l,3.4-thiadiazolin-5-one] were 



absorbed by cotton plants after foliar, seed, or stem treatments. Only 



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