By Robert C. Clarke, Mark D. Merlin
"'Cannabis: evolution and ethnobotany' is a accomplished, interdisciplinary exploration of the usual origins and early evolution of this well-known plant, highlighting its old position within the improvement of human societies. hashish has lengthy been prized for the powerful and sturdy fiber in its stalks, its safe to eat and oil-rich seeds, and the psychoactive and medicinal compounds produced via its woman vegetation. The Read more...
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Extra resources for Cannabis : evolution and ethnobotany
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If the PA (C. ruderalis) exists today, it must have survived at low population density in cryptic refugia at more northern latitudes than C. sativa or C. indica. During interglacial warming, Cannabis populations evolved naturally as they expanded northward, recolonizing niches for which they were preadapted, only to be restricted to temperate refugia during a subsequent glacial cold period. During the LGM, European C. sativa NLH populations likely found refuge in the foothills of the Caucasus Mountains and on the Balkan Peninsula, while Asian C.
What were our planet’s environmental and biotic conditions during Cannabis’s early evolution? What are the environmental conditions in which it grows naturally without human help? Can we realistically understand how Cannabis evolved? And if so, where and how did it evolve? To answer these questions we must investigate the basic life cycle and ecological requirements of Cannabis. After understanding the botany and ecology of Cannabis, including an identification of its closest botanical relatives, an analysis of the processes through which it reproduces, and an application of these parameters to ancient vegetation and climate reconstructions, then we can begin to comprehend its geographical and evolutionary origins (see Chapter 12 for discussions of climate reconstruction, refugia, and species formation).
Fieldwork and theories of famous Russian botanist Nicolai Ivanovich Vavilov (1931) added considerably to our understanding of crop plant origins. Vavilov studied phenotypic diversity (variation of observable traits) within Central Asian Cannabis, made many firsthand observations of the genus, and used it as an example of how to differentiate between a genuinely wild plant and a more recent escape from cultivation. Some of these characteristics of domestication are also found in wild cereals. Inflorescence shatters and distributes the seeds.