ZHANG Jing,TANG Dao-cheng,REN Liu-xia,et al.Effect of Temperature on Carbohydrate Metabolism andBud Development of Dormant Bulbs in Tulip[J].Northern Horticulture,2014,38(17):75-80.
温度对郁金香休眠鳞茎碳水化合物代谢及芽体发育的影响
- Title:
- Effect of Temperature on Carbohydrate Metabolism andBud Development of Dormant Bulbs in Tulip
- 文章编号:
- 1001-0009(2014)17-0080-03
- 分类号:
- S682.2+63
- 文献标志码:
- A
- 摘要:
- 以郁金香品种‘Golden Apeldoorn’和‘Red Impression’周径8~10 cm的鳞茎为试材，研究了常温(10~18℃)、5℃、0℃和-12℃不同温度处理0、4、8、12、13周对郁金香鳞茎混合样的水分、可溶性糖、淀粉含量的影响，并在实体显微镜下观察相应温度的芽体发育，探讨温度处理对碳水化合物代谢和芽体发育的影响。结果表明：各温度处理鳞茎的总含水量和淀粉含量随处理时间的延长而降低，可溶性糖含量增加，各温度处理下的淀粉和可溶性糖含量变化呈显著或极显著负相关（‘Golden Apeldoorn’-12℃处理除外）；由各温度处理下中心芽高度/鳞茎高度比值可知，2个品种的中心芽均在8~12周生长最快，其中0℃和5℃处理下中心芽发育最快。‘Golden Apeldoorn’0℃处理13周后的出芽率最高，达到92%，‘Red Impression’ 5℃处理13周后的出芽率最高，达到72%，二者明显高于其它温度处理，分别是2个品种切花促成栽培的最佳鳞茎处理温度。
- Abstract:
- Taking 8~10 cm bulbs of two different tulip varieties (‘Golden Apeldoorn’ and ‘Red Impression’) as test materials,the effect of room temperature(10~18℃),5℃,0℃,-12℃ for 0,4,8,12,13 weeks temperature treatments on the changes of moisture,soluble sugar and starch content were studied，meanwhile the bud development in each temperature under microscope was observed to disscus the effect of temperature on carbohydrate metabolism and bud development.The results showed that,with the increase of treatment time in each temperature,the moisture content and starch content in bulb decreased and soluble sugar increased,and there was a significant negative correlation between the changes of starch and soluble sugar in each temperature(except the treatment of -12℃ in ‘Golden Apeldoorn’)；the center bulb of both varieties grew most rapidly in 8~12 weeks by the ratio of center bud height to bulb height in each temperature treatment,especially in the degree of 0℃ and 5℃.The budding rate of ‘Golden Apeldoorn’ was as high as 92% under 13 weeks of treatment in 0℃,and ‘Red Impression’ was as high as 72% under 13 weeks of treatment in 5℃,both were significantly higher than other treatments,0℃，5℃ were the best treatment temperature in forcing culture of cut for this two varieties separately.
参考文献/References:
［1］Wilford R.Tulips:Species and Hybrids for the Gardener［M］.Timber Press,2006.
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备注/Memo
第一作者简介：张静（1988-），女，四川合江人，硕士研究生，研究方向为园林植物栽培生理。E-mail：jingzhangyx@163.com.