* MISCELLANEOUS PUBLICATION 1297, U.S. DEPT. OF AGRICULTURE 



Because plant pubescence is associated with resistance and susceptibility to 

 insects in at least 18 genera, the list will be of value to scientists working in 

 host-plant resistance and in teaching. 



The references were compiled from the Review of Applied Entomology 

 (R.A.E.), Biological Abstracts, Plant Breeding Abstracts, recent journals, and 

 bibliographies of cited publications. Information from publications not in 

 English was obtained largely from the abstract journals mentioned. 



Credit is due Eileen Rathke, former research associate, Entomology Depart- 

 ment, Michigan State University, for locating some of the publications cited 

 in this bibliography. 



GENERAL 



(1) Levin, D. A. 1973. the role of trichomes in plant defense. Quart. 



Rev. Biol. 48(1): 3-15. 

 Plant trichomes have been used for taxonomic purposes, but their adap- 

 tive significance has received little attention from the evolutionist and ecologist. 

 Trichomes play a role in plant defense. This publication contains over 100 

 references concerning topics ranging from the description and ontogeny of 

 trichomes to their role in plant defense of herbivorous invertebrates and ver- 

 tebrates. 



(2) Painter, R. H. 1951. insect resistance in crop plants. Macmillan, New 



York. 520 pp. First paperback ed. 1968. The Univ. Press of Kansas, 

 Lawrenceand London. 520pp. 

 Contains references to plant pubescence and insect behavior on: Alfalfa — 

 pp. 24, 33, 362; beans— pp. 61, 297-298, 442; clover— pp. 24, 33, 297-298; 

 corn — pp. 36, 219 (error on p. 36 of original edition: should read fewer 

 corn eggworm eggs on glabrous leaves than on corn with hairy leaves); 

 cotton— pp. 33, 86, 289-297, 305, 311; grapes— p. 38; and potatoes— pp. 

 278, 362, 375. 



ALFALFA 



(3) Taylor, N. L. 1956. pubescence inheritance and leafhopper resistant 



relationships in alfalfa. Agron. J. 48: 78-81. 

 Pubescent plants of Medicago sp. were more resistant to infestations of 

 Empoasca fabae (Harris) than glabrous plants. Pubescence was inherited as 

 a quantitative character. 



BEANS 



(4) Broersma, D. B., Bernard, R. L., and Luckmann, W. H. 1972. some 



effects of soybean pubescence on populations of the potato leafhop- 

 per. J. Econ. Ent. 65: 78-82. 

 The orientation of plant hairs was more important to the resistance of 

 Empoasca fabae than the number of hairs. Glabrous strains of Glycine max 

 (L.) Merrill were damaged by leafhoppers more than other strains. 



