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蜡梅切花的采后保鲜技术研究

Research on Postharvest Preservation Technology of Wintersweet Cut Flowers

  • 摘要: 以‘金罄口’蜡梅切枝为试材,对供试切枝进行一系列观赏指标的观测、记录,研究了不同预处理液、低温储藏时间及不同蔗糖浓度的保鲜液对蜡梅切花保鲜效果的影响,以期延长蜡梅切花的采后寿命。结果表明:1-MCP的熏气处理和传统的预处理液,对蜡梅的瓶插质量均有一定的提高,花枝衰老速度均低于清水对照,花枝开花率、完全开花率和最大花径明显提高,1-MCP与预处理液的复合结合即1 000 nL·L-1 1-MCP熏气+70 g·L-1蔗糖+7 mg·L-1 6-BA+200 mg·L-1 8-HQC预处液显示出了良好的作用,有效延长蜡梅切花寿命4 d,提高开花率10%,延长瓶插花枝的盛花时间;预处理措施能有效地延长蜡梅的采后冷藏时间7 d左右,并对冷藏25 d以上的蜡梅花枝的开花率和最大花径有明显的提高作用;0.2~1.0 g·L-1的蔗糖保鲜液对蜡梅的采后瓶插均有良好的促进作用,延长了瓶插寿命,提高了开花率,一定程度上增大了花的最大直径,尤以0.2 g·L-1的蔗糖保鲜液表现最佳,瓶插寿命延长了5 d,开花率提高了5.75%,最大花径增大了约0.2 cm。综上,1 000 nL·L-1 1-MCP熏气+70 g·L-1蔗糖+7 mg·L-1 6-BA+200 mg·L-1 8-HQC预处液处理和0.2 g·L-1的蔗糖保鲜液处理对蜡梅切花保鲜效果最佳,能够显著提高蜡梅切花的瓶插质量,延长瓶插寿命。

     

    Abstract: Taking ‘Jin Qingkou’ wintersweet cuttings as test material, the effects of different pretreatment solutions, low-temperature storage time and preservation solutions with different sucrose concentrations on the preservation effect of wintersweet cut flowers were investigated by using a series of ornamental indexes on the test cuttings, in order to prolonging the post-harvest life of wintersweet cut flowers.The results showed that the fumigation treatment of 1-MCP and the traditional pretreatment solution improved the quality of wintersweet cuttings, the aging rate of flower branches was lower than that of the clean water control group, the flowering rate, complete flowering rate and maximum flower diameter of the flower branches were significantly improved, and the combination of 1-MCP and pretreatment solution, namely 1 000 nL·L-1 1-MCP fumigation+70 g·L-1 sucrose+7 mg·L-1 6-BA+200 mg·L-1 8-HQC pretreatment solution showed a good effect, effectively prolonging the life of wintersweet cut flowers for 4 days, increased the flowering rate by 10% and extending the blooming time of the floral branches in the bottle.The pretreatment measures could effectively extend the postharvest refrigeration time of wintersweet for about 7 days, and had a significant effect on improving the flowering rate and maximum flower diameter of wintersweet branches refrigerated for more than 25 days.0.2-1.0 g·L-1 sucrose preservation solution had a good promotion effect on the postharvest bottle cuttings of wintersweet, prolonging the life of bottle cuttings, improving the flowering rate, and increaseing the maximum diameter of flowers to a certain extent, especially 0.2 g·L-1 sucrose preservation solution performs best, the bottle insert life was extended by 5 days, the flowering rate was increased by 5.75%,and the maximum flower diameter was increased by about 0.2 cm.To sum up, 1 000 nL·L-1 1-MCP fumigation+70 g·L-1 sucrose+7 mg·L-1 6-BA+200 mg·L-1 8-HQC pre-treatment and 0.2 g·L-1 sucrose preservation solution treatment had the best preservation effect on wintersweet cut flowers, which could significantly improve the quality of wintersweet cut flowers and prolong the life of bottle cuttings.

     

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