This manual is the first in a series of practical guides to suitable methods for processing and storing seeds in genebanks. It has been prepared specifically for genebank personnel, especially those technicians and staff involved in day-to-day seed handling. The manual attempts to explain step-by-step the practical procedures used in handling seeds in genebanks, especially those holding base collections. A series of scientific standards for the correct conservation of both base and active collections have been defined by the IBPGR Advisory Committee on Seed Storage. The techniques described in this manual are compatible with procedures recommended by the Committee. The operating procedures of genebanks must meet the high standards necessary for adequate conservation of germplasm, otherwise valuable materials will be lost - often irretrievably.
The techniques outlined here have been tried out and tested in genebanks; however, it should be realized that the techniques described here are not the only methods available. Seed technologists use many different techniques, but those selected and described in this manual are considered the most suitable for handling seeds of variable character within the same sample or accession. It is hoped that they form a useful basic guide.
Further detailed information of the techniques described in this manual and of alternative techniques can be found in the publications listed in Appendix I. In particular more detailed scientific information for curators can be found in the IBPGR publication 'Handbook of Seed Technology for Genebanks' by Ellis, Hong and Roberts (1985). Further advice can also be sought from the IBPGR Seed Conservation Officer, the IBPGR Information Officer and from the members of the IBPGR Advisory Committee on Seed Storage, whose names and addresses are found in Appendix IV.
The author would like to acknowledge the helpful and practical comments made by D. Astley, R.H. Ellis, S. Linington, E.H. Roberts, R.D. Smith, K.L. Tao and J.T. Williams during the preparation of this manual.
