In : Frankel , O. H .; Bennet , E. Genetic resources in plants - Their exploration and conservation . Blackwell , Oxford ... Brazil's National genetic resources and biotechnology center preserves and develops valuable germplasm .

Increased exploration and testing of genetic resources of mahogany species are urgently required , particularly of the ... 20 , 369-371 Britwum , S.P.K. 1970 Preliminary selection of provisional plus trees in the tropical high forest ...