INOCULATION WITH PINE TWISTING AND SCOTS PINE BLISTER RUST 321 



KlingstrBm, A. 1963b. Germination of aeciospores of Peridermium pini 



(Pers.) Lev. Svensk. Bot . Tidskrift 57: 277-282. 

 Klingstrbm, A. 1967. Current research on Peridermium pini (Pers.) L6v. a 



Vol. 5, p. 375-381. In Proc. XIV IUFRO-Congr. , Munich. 1967. DVFFA, 



Munich. 888 p. 

 KlingstrCm, A. 1969. Melampsora pinitorqua (Braun) Rostr. on progenies 



of Pinus silvestrie L. and in relation to growth regulating substances. 



Stud. Forest. Suec. 69: 1-76. 

 Kujala, V. 1950. Uber die Kleinpilze der Koniferen in Finnland. Commun . 



Inst. For. Fenniae 38: 1-121. 

 Liese, J. 1936. Zur Frage der Vererbbarkeit der Rindenbewohnenden 



Blasenrostkrankheiten bei Kiefern. Zeitschrift ftlr Forst- und 



Jagdwesen 68: 602-609. 

 Longo, N., F. Moriondo, and B. M. Naldini. 1967. Host relationship of 



Melampsora pinitorqua Rostr., Vol. 5, p. 373-374. In Proc. XIV 



IUFRO-Congr"., Munich, 196". DVFFA, Munich. 888 p. 

 Molnar, A. C, and B. Sivak. 1964. Melampsora infection of pine in 



British Columbia. Can. J. Bot. 42: 145-158. 

 Moriondo, F. 1956. Ricerche sulla Melampsora pinitorqua Rostr. in Italia. 



.Ann. Accad. Ital. Sci . For. 5: 263-282". 

 Moriondo, F. 1961. Ripetizione sperimentale del ciclo biologico di 



Metampsora pinitorqua Rostr. Ital. For. Mont. 16: "11-11 . 

 Murray, J. S. 1961. Forest pathology, p. 62. In Brit. Forest. 



Commission Rep. on Forest Res. 1960. 

 Mulder, D. 1953. Die Disposition der Kiefer ftlr den Kienzopfbef all als 



Kernproblem waldbautechnischer Abwehr. Schriftenreihe der Forstlichen 



Fakultat der Universitat GOttingen und Mitteilungen der Niedersachsichen 



Forstlichen Versuchsanstalt 10: 1-35. 

 Regler, W. 1957. Der Kieferndrehrost {Melampsora pinitorqua) eine 



wirtschaftlich wichtige Infektionskrankheit der Gattung Pinus. Beitr. 



zur Pappelforsch. 2: 205-234. 

 Roll-Hansen, F. 196". On diseases and pathogens on forest trees in 



Norway 1960-1965. Meddelelser fra Det Norske SkogforsOksvesen 80: 



: _ 3-262. 

 Schtltt, P. 1964. Zur Drehrostbefall an Kiefern. Unterschiede in der 



Starke des Melamvsora pinitorqua- Befalls zwischen HerkUnften und 



zwischen Einzelstammnachkommenschaften der Kiefer. Forstarchiv. 35: 



51-55. 

 van der Kamp, B. J. 1968. Peridermium pini (Pers.) LeV. and the resin- 

 top disease of Scots pine. Forestry 41: 189-198. 

 Ziller, W. G. 1965. Studies of western tree rusts VI. The aecial host 



ranges of Melampsora. albertensis, M. medusae 3 and M. oocidentalis . 



Can. J. Bot. 43": 217-230. 



FLOOR DISCUSSION 



KREBILL: Dr. KlingstrOm, with regard to Peridermium pini, you men- 

 tioned you have greater success high up on the shoot. I presume this is 

 only in current season growth, or do you also have success throughout the 

 older tissues also. 



KLINGSTROM: I have tried to inoculate shoots at different points. 

 Near the top of a shoot, in the middle of a shoot, and at the bottom of 

 an annual shoot, and of course, then we come up with blister rust from 

 all inoculations. I obtain perhaps three times more if I make inocula- 

 tions high up near the top of the shoot. 



