作者: Kathleen C. Parker , J. L. Hamrick , Wendy C. Hodgson , Dorset W. Trapnell , Albert J. Parker
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摘要: Pre-Columbian farmers cultivated several species of agave in central Arizona from ca. A.D. 600–1350. Because the longevity and primarily asexual reproduction these species, relict clones remain landscape provide insights into pre-Columbian agricultural practices. We analyzed variation allozyme allele frequencies to infer genetic effects prehistoric cultivation on Agave murpheyi A. delamateri, specifically estimate diversity structure, determine whether populations descended a single clone, examine regional-scale variation. maintained more at population levels than typically included multilocus genotypes. Relict plants fields reflect complex history descent clone; may have initially because bulbils (produced routinely but not delamateri) possibly seed would facilitated transport genetically diverse planting stock. Genetic both cultigens was lower most contemporary commercial crops similar that observed modern traditional systems. The genus is group succulent been important sources food fiber for humans Mesoamerica since least 9000 BP. (Callen, 1965; Gentry, 1982). Uses this region farther north during historic times include fiber, paper, soaps, shampoos, medicines, armed fences, fermented beverages, starchy meristem, flowers, or young inflores