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一、前言克罗克(Crocker,1906)首次强调了种皮对种子发芽的抑制作用。他认为,种子有时候是起着一种发芽阻碍作用的。在正常情况下,谷类及庭园花草的种子只需要3～21天便
I. INTRODUCTION Crocker (1906) for the first time emphasizes the inhibitory effect of seed coat on seed germination. In his view, seeds sometimes act as a germination impediment. Under normal circumstances, the seeds of cereals and garden flowers only need 3 to 21 days