1. Perspective on CARNA 5, cucumber mosaic virus-dependent replicating RNAs capable of modifying disease expression

   • Jacob M. Kaper

   Review Pages: 49 - 54

2. Advantages of multipartite genomes of single-stranded RNA plant viruses in nature, for research, and for genetic engineering

   • Lous van Vloten-Doting

   Review Pages: 55 - 60

3. Tuber proteins of potato—a new and surprising molecular system

   • William D. Park

   Review Pages: 61 - 66

4. Experimental approaches to the study of somaclonal variation

   • Thomas J. Orton

   Review Pages: 67 - 76

5. Analysis of chloroplast genomes in small amounts of tissue

   • Ellen M. Clark
   • Maureen A. Hanson

   Experimental Protocols Pages: 77 - 79

6. Genetic variability in tomato species

   • Charles M. Rick

   Genetic Resources Pages: 81 - 87

7. Genetic resources of unexploited native plants

   • Cyrus M. McKell

   Genetic Resources Pages: 89 - 94

8. Rockefeller foundation reviews prospects for improved crop salt tolerance

   • Robert Sacher

   Meeting Report Pages: 95 - 96