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III. Collaborative plan to preserve and rejuvenate conserved rice seedstocks
The following comprehensive plan of action suggests a division of responsbilities among the participating countries and international institutes. A. A complete set of conserved stocks (the base collection) should be preserved in long-term seed stroage at IRRI. National and international centers should provide to IRRI fresh and healthy seed of those stocks not already conserved there and of stocks that IRRI cannot effectively rejuvenate (see points C,D,E, and H). B. IRRI should preserve, rejuvenate and distribute the indica and javanical cultivars and breeding lines of O. sativa and other Oryza species except for those from Africa. C. Japan should preserve, rejuvenate, and distribute as many of the japonica varieties of East Asia as possible. D. The United States should preserve, rejuvenate, and distribute varieties from the U.S., temperate South America, and the Mediterranean area ; the U.S. also should continue to store duplicate samples of conserved IRRI stocks. E. IITA should preserve, rejuvenate, and distribute cultivars of O. glaberrima and wild species of Africa. IRTA plans to collaborate with IITA on seed multiplciation. IRAT, ORSTOM, and WARDA plan to collaborate with IITA on mediumterm storage. F. The above centers should exchange and carefully compare accession lists to minimize the maintenance of obviously duplciate accessions within single collections and to ensure that no distinct accession or ecostrain is overlooked in the inventorial process. G. Major germ plasm centers are urged to keep complete duplciate sets of accession records at separate locations to avoid loss through fire or other disasters. In the acquisition or exchange and use of accessions from major collections, original names and accession numbers should be included in the continuing records for cross reference purposes. Major germ plasm centers are encouraged to standardize record systems. Where such standardization is impractical, compatibility of separate systems should be assured. H . Each national and regional center should preserve and rejuvenate its complete collection or at least a working collection, and assist the major germ plasm centers to increase and rejuvenate accessions that are porrly adapted to the growing conditions at the centers. |
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