Naturally Occurring Triploidy in Cannabis.

Polyploidy is a significant evolutionary process in plants that involves the duplication of genomic content and has been recognized as a key mechanism driving plant diversification and adaptation. In natural populations, polyploids frequently arise from unreduced gametes, which subsequently fuse with reduced or unreduced gametes, resulting in triploid or tetraploid offspring, respectively. L.

Heinz-resistant tomato cultivars exhibit a lignin-based resistance to field dodder (Cuscuta campestris) parasitism.

Cuscuta species (dodders) are agriculturally destructive, parasitic angiosperms. These parasitic plants use haustoria as physiological bridges to extract nutrients and water from hosts. Cuscuta campestris has a broad host range and wide geographical distribution.

First report of causing root rot in (L.) in California.

In June of 2020 we observed greenhouse grown in Sonoma County, CA and Monterey County, CA showing stress symptoms: stunting, leaf chlorosis, and leaf senescence, when moved to flower production conditions. We uprooted symptomatic and healthy plants and observed disease symptoms only in symptomatic plants: reduced root mass, reduced root hair density, and necrosis. Roots and growth substrate samples were taken from infected and healthy plants for further analysis.

First report of causing crown rot in greenhouse grown (L.) in California.

In April of 2020 cuttings of (L.) in a greenhouse in San Mateo County, CA were observed collapsing, and further observation revealed: water-soaked stems, tan discoloration to the cortex, and discolored roots. The greenhouse irrigation system was supplied by a local stream.