干热处理对丝瓜种子发芽和贮藏特性的影响(英文)

Effects of dry heat on germination and storability of Luffa cylindrica

【目的】探讨干热处理对丝瓜种子发芽和贮藏特性的影响,以期获得可有效促进丝瓜种子萌发和贮藏的便捷途径。【方法】以4个丝瓜品种(CTS-02、CTS-03、CTS-04和CTS-05)的种子为试验材料,分别在60、70和80℃的干热条件下处理30、60和90 min,随后检测其发芽和种子贮藏能力。【结果】经60℃处理30 min,初始发芽率较低的CTS-02和CTS-04的种子发芽率分别提高到26%和44%;在80℃处理60 min,初始发芽率较高的CTS-03和CTS-05的种子发芽率分别提高到96.5%和91%。80℃处理60 min后将CTS-03和CTS-05分别在15℃和32℃条件下贮藏6个月,其种子发芽率均未发生显著变化。【结论】干热处理对种子萌发有促进作用,但效果大小和丝瓜品种特性有关;干热处理对丝瓜种子发芽的促进效果可以维持6个月以上。

[Objective]The present experiment was aimed to determine the effects of dry heat treatment on germination and storability of smooth luffa seeds in order to improve their storability and germination rates.[Method] The seeds of 4 luffa varieties,viz.,CTS-02,CTS-03,CTS-04 and CTS-05 were treated with dry heat（60,70 and 80℃） for 30,60 and 90 min and its effect on seed storability and germination was observed.[Result]The highest germination rates in CTS-02 and CTS-04 treated with 60℃ for 30 min were recorded as 26 and 44%.The seeds of variety CTS-03 and CTS-05 responded markedly when treated with 80℃ for 60 min,as showed by 96.5 and 91.00% increase in germination,respectively.These seeds did not show any significant reduction in ability to germinate after six months storage at 15 and 32℃.The results showed that dry heat treatment improved germination performance of luffa seeds,however the effects of dry heat treatment differed in different varieties.In addition,the effects of dry heat on germination of smooth luffa seeds lasts for more than 6 months.[Conclusion]Dry heat treatment improves the germination of luffa seeds,however,genotypic differences are significant.The positive effects of dry heat treatments on germination could last for over six months.