超干处理对大叶白麻种子活力的影响研究  

Effect of Ultra-dry Treament on Poacynum hendersonii Seeds Vigor

作　　者：刘艳萍[1] 段黄金[1] 鲁乃增[1] 梁慧[1] 

机构地区：[1]塔里木大学植物科学学院,新疆阿拉尔843300

出　　处：《塔里木大学学报》2010年第2期22-27,共6页Journal of Tarim University

基　　金：塔里木大学校长基金硕士项目(编号TDZKSS06001)

摘　　要：本实验采用硅胶干燥法对大叶白麻种子进行超干保存,将种子含水量降至5%以下,能显著提高抗老化能力。在同等老化处理条件下,对照种子发芽率和活力指数已大幅下降,而超干种子的发芽率和活力指数所受影响很小。对超干种子的电导率、脱氢酶活性的研究结果表明,含水量为3.37%的超干种子细胞膜系统的完整性良好。回湿处理是保证超干种子活力的关键因素,采用室内回湿24h+饱和水蒸气回湿24h可以显著提高大叶白麻超干种子的活力。研究结果表明,利用超干技术保存大叶白麻种子是可行的。Poacynum hendersonii Seeds moisture content will be reduced to 5% or less by silica gel, that can significantly improve the ability of anti - aging. Dealing with the same aging conditions, the control of seeds germination rate and vigor index has fallen significantly, while the same aging conditions have a small impact on the ultra - dry seed germination rate and vigor index. The study of the conductivity and dehydrogenase activity of the Ultra - dry. seeds reveals that the water content of 3.37% for the ultra - dry seeds have good integrity of the biomembrane system and high dehydrogenase activity, a key factor guaranteeing the vigor of the ultra - dried seed is re - humidification treatment, back to the use of indoor wet 24h with saturated water vapor to wet It can significantly improve the vitality of Poacynum hendersonii ultra - dry seeds. The results show that ultra - drying technique is a feasible measure to store the Poacynum hendersonii seeds.

关 键 词：大叶白麻种子 超干保存 最适含水量 

分 类 号：Q949.9[生物学—植物学]