引发处理对西瓜种子保存和寿命的影响

Effect of Priming on Storage and Longevity of Watermelon Seeds

以经过固体基质引发的二倍体和三倍体西瓜种子作为试验材料,观察4℃和室温保存条件下种子萌发特性的变化,研究引发效果的保持情况;采用加速老化方法研究老化过程处理种子萌发特性的变化,确认固体基质引发处理对种子寿命的影响。结果表明:种子发芽指数的变化可以作为引发效果的衡量指标;室温下保存的三倍体西瓜种子的引发效果可以保持24个月,而室温下保存的二倍体西瓜种子、4℃下保存的二倍体和三倍体种子的引发效果至少可以保持3年以上;对引发的二倍体种子进行的加速老化试验表明,当老化时间不超过24h,引发种子表现出更好的萌发特性;当老化时间达到48h后,处理种子衰老更快。

Taking diploid and triploid watermelon seeds as materials that were treated with solid matrix priming. Germination character of seeds stored at 4℃ or room temperature were observed,priming effect were studied,germination changes were studied by seeds treated with accelerated deterioration, the effect of solid matrix priming on storage and longevity of watermelon seeds were studied. The results showed that the germination index could be regarded as priming benefit inde~ The priming benefit of triploid seeds stored at room temperature could be maintained for 24 months,while the priming benefit of all diploid seeds and triploid seeds stored at 4℃ could be maintained for at least 36 months. Both primed and unprimed diploid seeds were treated with accelerated deterioration, the primed seeds showed less sensitivity to shorter than 24 hours treatment and more sensitivity to longer than 48 hours treatment.