1. The identification and evaluation of hybrid plants among open pollinated true seed families

   • Gisela C. Arndt
   • S. J. Peloquin

   OriginalPaper 01 July 1990 Pages: 393 - 404

2. Performance of haploid x wild species, 2x hybrids (involving five newly evaluated species) in 4x × 2x families

   • G. L. Yerk
   • S. J. Peloquin

   OriginalPaper 01 July 1990 Pages: 405 - 417

3. Influence of potato cultivars on the effectiveness of fungicide control of early blight

   • B. J. Christ

   OriginalPaper 01 July 1990 Pages: 419 - 425

4. Assessment of field responses of potato cultivars and breeder seedlings to potato late blight epidemics

   • H. W. (Bud) Platt
   • K. B. McRae

   OriginalPaper 01 July 1990 Pages: 427 - 441

5. The effect of ethylene and abscisic acid on symptom expression of bacterial ring rot in eggplant and potato

   • Chester J. Kurowski
   • Neil C. Gudmestad

   OriginalPaper 01 July 1990 Pages: 443 - 459

6. Foliar solanidine glycoside levels in Solanum tuberosum populations selected for potato leafhopper resistance

   • L. L. Sanford
   • K. L. Deahl
   • T. L. Ladd

   OriginalPaper 01 July 1990 Pages: 461 - 466

7. Gary D. Kleinschmidt

   News And Reviews 01 July 1990 Pages: 467 - 468

8. Errata

   • Hugh J. Murphy

   Announcement 01 July 1990 Pages: 469 - 469

9. Donald John MacLeod 1894–1990

   • S. H. DeBoer
   • N. S. Wright
   • H. J. Murphy

   News And Reviews 01 July 1990 Pages: 470 - 471