PANEL V 



BREEDING SCHEMES FOR MASS -PRODUCTION OF 

 RUST RESISTANT TREES 



Norman E. Borlaug 3 MODERATOR 



Carl Eeimburger 



BREEDING WHITE PINES FOR RESISTANCE TO BLISTER RUST AT 



THE INTERSPECIES LEVEL 541 



S. Kedharnath 



THE LONG-RANGE OUTLOOK FOR PRODUCTION OF RUST RESISTANT 



TREES BY INDUCED MUTAGENESIS 551 



Hans Hattemer 



PERSISTENCE OF RUST RESISTANCE 561 



Ernst J. Sohreiner 



MASS PRODUCTION OF IMPROVED FOREST TREE PLANTING STOCK 



THROUGH SYNTHETIC VARIETIES 571 



Henry D. Gerhold 



MULTIPLE TRAIT SELECTION IN WHITE PINE BREEDING SYSTEMS: 



BLISTER RUST RESISTANCE, WEEVIL RESISTANCE, TIMBER YIELD . . 591 



Viator M. Steenackers 



BREEDING POPLARS RESISTANT TO VARIOUS DISEASES 599 



Scott S. Pauley and Clifford E. Ahlgren 



A WHITE PINE BLISTER RUST RESISTANCE BREEDING PROJECT IN 

 NORTHEASTERN MINNESOTA 609 



Norman E. Borlaug 



MODERATOR'S SUMMARY: A CEREAL BREEDER AND EX-FORESTER'S 



EVALUATION OF THE PROGRESS AND PROBLEMS INVOLVED IN 



BREEDING RUST RESISTANT FOREST TREES 615 



539 



