Institute of Archaeology, University College London, London WC1H OPY, United Kingdom.
Proc Natl Acad Sci U S A. 2014 Apr 29;111(17):6147-52. doi: 10.1073/pnas.1308937110. Epub 2014 Apr 21.
Recent increases in archaeobotanical evidence offer insights into the processes of plant domestication and agricultural origins, which evolved in parallel in several world regions. Many different crop species underwent convergent evolution and acquired domestication syndrome traits. For a growing number of seed crop species, these traits can be quantified by proxy from archaeological evidence, providing measures of the rates of change during domestication. Among domestication traits, nonshattering cereal ears evolved more quickly in general than seed size. Nevertheless, most domestication traits show similarly slow rates of phenotypic change over several centuries to millennia, and these rates were similar across different regions of origin. Crops reproduced vegetatively, including tubers and many fruit trees, are less easily documented in terms of morphological domestication, but multiple lines of evidence outline some patterns in the development of vegecultural systems across the New World and Old World tropics. Pathways to plant domestication can also be compared in terms of the cultural and economic factors occurring at the start of the process. Whereas agricultural societies have tended to converge on higher population densities and sedentism, in some instances cultivation began among sedentary hunter-gatherers whereas more often it was initiated by mobile societies of hunter-gatherers or herder-gatherers.
最近考古植物学证据的增加为植物驯化和农业起源的过程提供了深入的了解,这些过程在几个世界区域中是并行发展的。许多不同的作物物种经历了趋同进化,并获得了驯化综合征特征。对于越来越多的种子作物物种来说,这些特征可以通过考古证据的代理来量化,从而提供驯化过程中变化速度的衡量标准。在驯化特征中,非破碎的谷物穗比种子大小一般进化得更快。然而,大多数驯化特征在几个世纪到几千年的时间里表现出相似的缓慢表型变化率,而且这些率在不同的起源地区是相似的。作物以营养繁殖,包括块茎和许多果树,在形态驯化方面较难记录,但多种证据概述了新世界和旧世界热带地区植物文化系统发展的一些模式。可以根据过程开始时出现的文化和经济因素来比较植物驯化的途径。虽然农业社会往往趋向于人口密度和定居的增加,但在某些情况下,农业是由定居的狩猎采集者开始的,而在更多情况下,是由流动的狩猎采集者或牧民开始的。