McDonald, Geral I., and D. S. Andrews. 



1980. Influence of temperature and spore stage on produc- 

 tion of teliospores by single aeciospore lines of 

 Cronartium ribicola. USDA For. Serv. Res. Pap. INT-256, 

 9 p. Intermt. For. and Range Exp. Stn. , Ogden , Utah 

 84401. 



Genetically identical aeciospore and urediospore popula- 

 tions grown on a single ribes clone varied in time required 

 to produce teliospores. Infection developing from uredio- 

 spores usually produced teliospores in less than 28 days when 

 grown at 55°F (13°C) ; whereas, infections developing from 

 aeciospore generally required more than 35 days at the same 

 temperature . 



KEYWORDS: Cronartium ribicola, epidemiological fitness, 



inherited traits, detached leaf culture of rust 



McDonald, Geral I., and D. S. Andrews. 



1980. Influence of temperature and spore stage on produc- 

 tion of teliospores by single aeciospore lines of 

 Cronartium ribicola . USDA For. Serv. Res. Pap. INT-256, 

 9 p. Intermt. For. and Range Exp. Stn., Ogden, Utah 

 84401. 



Genetically identical aeciospore and urediospore popula- 

 tions grown on a single ribes clone varied in time required 

 to produce teliospores. Infection developing from uredio- 

 spores usually produced teliospores in less than 28 days when 

 grown at 55°F (13°C) ; whereas, infections developing from 

 aeciospore generally required more than 35 days at the same 

 temperature . 



KEYWORDS: Cronartium ribicola , epidemiological fitness, 



inherited traits, detached leaf culture of rust 



