Premium
Relationships of Stripe Rust Spike Infection to Morphologic and Agronomic Traits of Wheat 1
Author(s) -
Allan R. E.,
Pritchett J. A.
Publication year - 1972
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1972.0011183x001200040004x
Subject(s) - biology , lemma (botany) , poaceae , rust (programming language) , spike (software development) , botany , agronomy , veterinary medicine , horticulture , programming language , medicine , management , computer science , economics
The relationships of spike infection caused by the stripe rust fungus ( Puccinia striiformis West.) with awn expression, spike type and plant height among near‐isogenic lines of winter wheat ( Triticum aestivum L.) were studied at Pullman, Washington in 1966–67. The percentage and severity of lemma infection served to determine spike infection. Awned lines had 16 to 41% more lemmas infected than awnless sibs suggesting that the awn influences the incidence of the disease. Presence or absence of the club gene did not affect the occurrence of lemma infection. Plant height was related to the percentage and severity of lemma infection in all five populations tested, but this relationship varied. Short lines tended to be more vulnerable to lemma infection by stripe rust in some seasons and in certain genetic backgrounds. Yield losses correlated with the percentage and severity of lemma infection among near‐isogenic lines of C.I. 13253/7*‘Burt.’ Test weight differences were related to both the percentage and severity of lemma infection by the disease.