REPORT OF THE COMMITTEE ON WHITE PINE BLISTER RUST 653 



Therefore, the Subcommittee on Procurement and Exchange of (white 

 pinel Breeding Materials makes the following recommendations: 



(1) That it be authorized by the Working Group Chairman to canvass 

 research institutions throughout the world concerned with white pine 

 breeding for blister rust resistance, to determine their requirements 

 for seed; 



(2) That the seed survey be extended to institutions engaged in 

 white pine breeding for objectives other than rust resistance, in order 



to extend the work to all white pine species, avoid duplication of effort, 

 and provide for coordination and cooperation; 



(3) That seed collections be made from indigenous stands, selected 

 insofar as possible to provide a representative sampling of the gene 

 pool of the species; 



(4) That special attention be given to Pinus griffithii (syn. P. 

 walliohiana) because of its importance in breeding programs for both 

 rust resistance and increased yield. (It is anticipated that tests of 

 this species will be large-scale, because of the probable wide variation 

 within the species.) 



(5) That in view of the world-wide interest in Finns strobus , con- 

 sideration be given to procurement and exchange of breeding material of 

 this species, recognizing that in many areas a prerequisite may be the 

 establishment of blister rust test facilities and a special program for 

 the selection of potentially rust-resistant trees, rather than a mass 

 selection program; 



(6) That other species of white pines should be included in the 

 procurement and exchange program, insofar as possible. (Species of 

 interest are Pinus montioola, Pinus peuce 3 Pinus koraiensis s Pinus 

 armandii 3 Pinus strobiformis, Pinus parvi flora (synonyms Pinus pentaphylla 

 and Pinus himekomatsu ) , Pinus lambertiana 3 Pinus eembra 3 Pinus sibirioa 3 

 Pinus albicaulis, Pinus flexilis 3 Pinus aristata 3 and Pinus balfouriana) ; 



(7) That financing or barter arrangements be established for each 

 species as needed, the method possibly being different for different 

 species or groups of species (i.e., undertaken by scientist-to-scientist 

 or institute-to-institute cooperation, by subscription, by a foundation, 

 by a governmental agency, or by a combination of these methods); 



(8) That procurement arrangements for Pinus griffithii begin as soon 

 as possible after a collection plan is developed, with an effort to 

 obtain seed collections by the autumn of 1971, and that similar efforts 

 be made as soon as possible on Pinus peuoe 3 Pinus koraiensis 3 and Pinus 

 armandii ; 



(9) That the Subcommittee on Procurement and Exchange of Breeding 

 Materials be authorized to provide the leadership in the planning and 

 organization of these collections and exchanges, working when desirable 

 through other agencies and programs, and, through its Chairman, maintain- 

 ing close contact with such agencies; and finally, 



(10) That close liaison be maintained with IUFRO's Working Group 



on International Provenance Testing (P. Bouravel, Chairmanl and with Its 

 Working Group on the Procurement of Seed for Provenance Tests (H. Barrier, 



