【序号】:1 【作者】:Gordon G. McNickle and James F. Cahill, Jr. 【题名】:Plant root growth and the marginal value theorem 【期刊】:PNAS 2009 106:4747-4751; published online before print March 5, 2009, doi:10.1073/pnas.0807971106 【年、卷、期】: 【全文链接】:http://www.pnas.org/content/106/12/4747.full.pdf+html