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The effect of Phragmidium mucronatum on rose understocks and maiden bush roses
Author(s) -
SHATTOCK R. C.,
BHATTI M. H. RAHBAR
Publication year - 1983
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1983.tb01301.x
Subject(s) - biology , rust (programming language) , cultivar , horticulture , shoot , botany , computer science , programming language
Persistent infection of field‐grown Rosa laxa hort, by the rust fungus Phragmidium mucronatum was observed throughout summer and autumn in 1979 and 1980. Rust significantly reduced shoot number, length and fresh weight (to 85 and 54% of the control after one and two seasons respectively) along with flower number and fruit yield. Root weight was also reduced to 55% of the control over two seasons. The growth of four bush rose cultivars budded on to rusted Laxa stocks was reduced, affecting bush quality. Overall, rust‐free stocks produced twice as many saleable maidens as rusted stocks but bud take was not affected by P. mucronatum.