【摘要】 不同剂量６０Ｃｏγ射线处理去外种皮的银杏种子，５０Ｇｙ以上剂量处理的种子不能发芽，种胚活力迅速下降而趋于死亡，８００Ｇｙ以下剂量处理后，胚乳仍保持较长时期的活力。２０００Ｇｙ以上剂量使种子失水加快，胚乳失活且变软腐烂，其电导率迅速上升。辐照处理使银杏降种子的呼吸受到较大抑制，有利于贮藏保鲜。银杏种子密封包装后，经５０～２００Ｇｙ辐照处理并在室内常温存放，含水量４０２５％的银杏种子的保质期为２～３个月，当种子含水量降至３５９６％时，保质期可达４～６个月。更多还原

【Abstract】 Ginkgo seeds were treated with various doses of 60 Co γ ray.When treated with 50Gy,Ginkgo seeds could not sprout because of dealdembryos.But the endosperm was still vigorous in a relative long period when treated with 800Gy and over 2kGy, causing Ginkgo seeds to lose water more quickly,show higher conductivity and the endosperm softened and die.The respiration of Ginkgo seeds was restrained greatly after γ irradiation.When Ginkgo seeds were treated with 50～200Gy γ irradiation and preserved in normal atmospheric temperature after air tightwrapping with plastic film,the preservation period of the seeds was 2 to 3 months with water content of 40 25% and 4 to 6 months water content of 35 96%, respectively.更多还原