薄荷精油对不同基因型马铃薯原原种的抑芽效果

发芽是造成马铃薯贮藏损失的主要原因之一。为探讨薄荷精油对贮藏马铃薯原原种的抑芽效果,设置0(CK)、20、50、80μL·L~(-1)等4个薄荷精油浓度梯度,处理云薯603、云薯401和紫云1号3个马铃薯品种的原原种,分别于贮藏后0、13、41、48、66、91d观察测量马铃薯块茎的发芽率和芽长。结果表明:与对照相比,经过薄荷精油处理室温贮藏3个月后,3个马铃薯品种的发芽率和芽长大都显著降低,当薄荷精油浓度达到80μL·L~(-1)时,3个马铃薯品种的发芽率和芽长均低于其他处理,基本呈现薄荷精油浓度越高对马铃薯抑芽效果越明显的规律;但云薯401在20μL·L~(-1)和80μL·L~(-1)两个浓度下的抑芽效果较50μL·L~(-1)处理要好,说明薄荷精油对马铃薯抑芽效果除了与精油浓度有关以外,与品种也有关系。

Sprout Inhibition Effect of Mint Essential Oil on Potato Breeder Seed of Different Genotypes

Germination is one of the main reasons causing potato storage loss. In order to investigate thesprout inhibition effect of mint essential oil on storaged potato breeder seeds，this paper designed 4 mint essentialoil concentration gradient（0，20，50，80 μL·L^-1） to treat 3 potato breeder seeds of‘ Yunshu 603’、‘Yunshu 401’ and‘ Ziyun No.1’，and measured their germination rates and bud lengths of potato tubers at 0，13，41，48，66 and 91 days after storage，respectively. The results showed that compared with the contrast， thegermination rate and bud length of these 3 potato varieties were significantly decreased after 3 months treatmentsby mint essential oil and storage under room temperature. When the mint oil concentration reached 80μL·L^-1，the germination rates and bud lengths of these 3 potato varieties were all lower than that of the other treatments，showing the rule of the higher concentration of mint essential oil，the more obvious of sprout inhibition effect. Butthe sprout inhibition effects of‘ Yunshu 401’ treated with the concentration of mint essential oil by 20μL·L^-1 and80μL·L^-1 were better than that by 50μL·L^-1，showing the fact that besides the concentration of mint essentialoil concentration，the potato variety was also related with the sprout inhibition effect.