652 BINGHAM, KRIEBEL, AND GREMMEN 



remaining stands. Then, through H. D. Gerhold, Chairman of the parent 

 Working Group, he will contact the land managing agencies concerned and 

 the International Union for the Conservation of Nature, with a concrete 

 proposal for preservation of select stands. 3 



General discussion on these five general business items and on 

 proposed action thereon was invited by participants at the Advanced Study 

 Institute, then in session, at open meetings on Wednesday, August 20 

 and Saturday, August 23, 1969. The proposed actions received general 

 approval . 



B. Subcommittee Meetings 



The two Subcommittees met on successive evenings August 18 and 19, 

 1969, to discuss operational problems and to prepare recommendations. 

 John Gremmen's Subcommittee also met for an hour the morning of August 23. 

 Recommendations are given below. 



Those of the Subcommittee on Procurement and Exchange of (white 

 pine) Breeding Materials submitted by H. B. Kriebel are quite lengthy and 

 detailed. This is because they serve as a preamble for recommendations 

 of both Subcommittees—tying the work of the Subcommittees together and 

 detailing the Committee's concern with securing materials for provenance 

 as well as for resistance testing. Those of the Subcommittee on Inter- 

 national (white pine blister rust) Resistance Testing Facilities may, in 

 contrast, appear to be quite short and general. This reflects the 

 presently scanty information available to the latter Subcommittee con- 

 cerning (1) potential N. European and Asian cooperators and test sites, 

 (2) exact amounts of white pine species materials that will become avail- 

 able for resistance testing through Kriebel's Subcommittee, (3) exact 

 amounts and quality of tested, improved materials of P. strobus , P. 

 montioola 3 P. lambertiana, P. peuce, etc. , available, (4) suitable and 

 economical experimental designs for testing species or improved materials, 

 (5) extent and timing of examination schedules for these tests, and (6) 

 means for financing the tests. Action to relieve these informational 

 voids is indicated in the recommendations or discussion that follows them. 



1. Recommendations of the Subcommittee on Procurement and Exchange 

 of Breeding Materials , of the IUFRO White Pine Blister Rust 

 Committee 



The gene pool available for white pine breeding includes a number of 

 other species besides Pinus strobus and Pinus monticola. Since there is 

 evidence of genetic resistance to white pine blister rust in several of 

 these species, there is a need for procurement and exchange of these 

 potentially valuable breeding materials. There is also a considerable 

 interest in the use of these species for breeding objectives other than 

 rust resistance. 



3 Editor's note: The Chairman of the Committee on Uhite Pine Blister 

 Bust did so act , on September 16 and. 17,1969, initiating inquiries in 

 respect to preservation of representative natural stands of Pinus armandii 

 and P. morrisonicola in Taiwan, or of Pinus pentaphylla and P. himekomatsu 

 in Japan. So far 3 efforts toward preservation of the two Taiwanese 

 species are well along toward preservation of several specimen stands of 

 P. armandii and P. morrisonicola. Those aimed at preserving Japanese 

 white pines, however, have not progressed beyond the initial inquiry. 



