Powdery mildew resistance in a Nepali Mountain Ganja landrace (foreground) is shown in the above photo of a test for resistance to powdery mildews.
Powdery mildews are a group of related fungi which attack a wide range of plants, causing a white, dusty coating on leaves, stems and flowers.
Nearly all modern ‘drug-type’ Cannabis strains get obliterated by powdery mildew in field trials.
But several of our accessions of Cannabis landraces showed amazing resistance to PM.
Most impressive was an accession from Chitral, which showed total resistance – i.e., zero infection.
Other excellent performers were Nanda Devi, Nanda Devi #2, Rasoli, Kandahar, Tirah, and Moliotiko.
