Abstract
The present study reports the fungi associated with stored seeds of an alien weed Parthenium hysterophorus L. collected from Lahore from February to June 2006. Experiment was conducted on July, 2006. A total of three fungal species namely Aspergillus niger van Tieghem, A. flavus Link ex Gray and Alternaria alternata (E.M. Fries) Keissler were isolated from Parthenium seeds. The percentage of occurrence of A. nigeer, A. flavus and A. alternata was 10, 20 and 30%, respectively in February. In the succeeding months of March and April both the number of species and their frequency of occurrence were reduced. Seeds collected in May and June did not harbour any fungal flora. This is the first report on seed-born mycoflora of Parthenium.
