Certain chromosomal abnormalities are needed to catalogue irregularities in the structure of the synaptonemal complex of tomato. The abnormalities of interest are haploids, triploids, inversions, duplications, and deletions. If you have such stocks available, I would appreciate your contacting me:
Stephen Stack
Department of Botany
Colorado State University
Fort Collins, CO 80523
Telephone:
(303) 491-6802; 491-6249
We plan to examine these abnormalities by a new hypotonic bursting technique that allows visualization of complete sets of synaptonemal complexes in two dimensions by both light and electron microscopy. This study is part of an ongoing investigation of synapsis in tomato that is preceeded by:
Stack, S. 1982. Two dimensional spreads of synaptonemal complexes from solanaceous plants. I. The technique. Stain Technol. 57:265-272.
Stack, S. and L. Anderson. 1986. Two-dimensional spreads of synatonemal complexes from solanaceous plants. II. Synapsis in Lycopersicon esculentum (tomato). Amer. J. Bot. in press.
TOMATO CROP ADVISORY COMMITTEE ACTIVITIES
The recently formed Tomato Crop Advisory Committee (CAC) met in Blacksburg, Virginia, during the 1985 American Society for Horticultural Science annual meetings. This CAC is one of more than 30 commodity advisory committees whose functions are to advise on matters pertaining to crop germplasm collection, conservation, evaluation, and use. The tomato CAC has membership from both the public and private sectors in the US and Canada and representation from Mexico will be added in the near future.
This committee has expressed concern regarding the long term future of tomato germplasm collections and breeding programs, in particular the Tomato Genetics Stock Collection maintained by Dr. C. M. Rick at Davis, California. The tomato CAC agreed that there is a serious need to determine where valuable tomato germplasm exists outside of the National Plant Germplasm System (NPGS), and efforts made to include this material in the system. Disease, insect and stress resistance were viewed as of highest importance for future evaluation and enhancement.