Effect of Temperature on Carbohydrate Metabolism andBud Development of Dormant Bulbs in Tulip(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2014年17期

Page:

75-80

Research Field:

Publishing date:

Info

Title:

Effect of Temperature on Carbohydrate Metabolism andBud Development of Dormant Bulbs in Tulip

Author(s):

ZHANG Jing; TANG Dao-cheng; REN Liu-xia; MA Yun-ji

Plateau Flower Research Center,Qinghai University,Xining,Qinghai 810016

Keywords:

tulip; dormant bulb; temperature treatment; carbohydrate metabolism; bud development

PACS:

S682.2+63

DOI:

-

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.

References:

［1］Wilford R.Tulips:Species and Hybrids for the Gardener［M］.Timber Press,2006.

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