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.
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)
关键词
大叶白麻种子
超干保存
最适含水量
Poacynum hendersonii Seeds
ultra - dry preservation
optimum water content
