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Zamir K. Punja on Muck Rack

Zamir K. Punja

As seen in: MDPI, Taylor & Francis Online, Greenhouse Grower
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Articles

Cannabis genotypes display differences in the tissue distribution and levels of Hop latent viroid in leaves and roots following inoculation

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By Zamir K. Punja, Bárbara Wong Verified
| Taylor & Francis Online
Abstract Hop latent viroid (HLVd) is a destructive pathogen of cannabis (Cannabis sativa L.) plants, in which symptom development is greatly influenced by the cannabis genotype. In the present study, we assessed three commercial genotypes for levels of HLVd following artificial inoculation. Viroid levels were measured in root and leaf tissues by RT-qPCR at 14, 28, 42 and 56 days post-inoculation (dpi) under controlled environmental conditions.
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Management of powdery mildew affecting Monarda plants

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By Zamir K. Punja, Omar Sanioura
| Taylor & Francis Online
Abstract Powdery mildew was observed on susceptible cultivars of Monarda didyma (Monarda) plants in a commercial nursery in British Columbia during 2021. PCR of the ITS1-5.8S-ITS2 region of rDNA revealed a 98% sequence identity to Golovinomyces monarda and G. biocellatus. Disease management strategies, both preventative (two trials) and eradicative (five trials), were assessed using four disease control products during 2022.
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Evidence for a wide host range of Fusarium oxysporum isolates originating from Cannabis sativa L. (cannabis) plants and responses of cannabis genotypes to pathogen infection

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By Zamir K. Punja, Samantha Lung, Hayley Kellam
| Taylor & Francis Online
Abstract Infection of cannabis (Cannabis sativa L.) plants by Fusarium oxysporum under greenhouse conditions causes damping-off, root and crown rot, vascular discoloration, and wilt. The pathogen is widespread in Canada and also infects hemp plants grown outdoors worldwide. The host range of F. oxysporum isolates originating from cannabis plants and the responses of various genotypes to pathogen infection have not been studied.
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