为了探索促进松树丰产、优质和抗病的可能性,将乔治亚试验站各地生长的松树种子与幼苗进行了钴-60γ-射线辐射处理。当1959年开始进行此项研究时,我们对于γ-射线辐射火炬松(Pinus taeda L.)的致死剂量了解的很少。May 和 Posey 在阿拉巴马工学院进行的研究工作证明,25000伦琴(γ.)的辐射剂量对 In order to explore the possibility of promoting pine yield, quality and disease resistance, pine seeds and seedlings grown at various sites in Georgia were subjected to cobalt-60 gamma-ray irradiation. When the study was started in 1959, we did not know much about the lethal dose of gamma-ray exposure to Pinus taeda L. The research conducted by May and Posey at the Alabama Institute of Technology shows that a radiation dose of 25,000 Roentgen (γ.)