Abstract In order to investigate the suitable storage time for the root-cutting grafted cucumber seedling,this experiment studied the effects of different storage times on the survival rate,morphological and physiological indexes of commercial seedlings of root-cutting grafted cucumber( Cucumis sativus L.).Under 20 ℃,in darkness and high relative humidity(99%),we compared the effects of storage times including 0( control),4,8,12,16,20,24,28,32,36,40,48 hours,respectively on root-cutting cucumber grafted seedlings.The results indicated that the treatment of 48 hours,in spite of high survival rate(98.50%),showed significant differences with 40 hours treatment in the following terms of dry weight,root dry weight,seedling index,soluble sugar of true leaf,absorption area,volume of rootand root length compared.These results also indicated that under 20 ℃,in darkness and high relative humidity,the suitable storage time should be controlled within 40 hours to assure the high survival rate and good quality of commercial seedlings of root-cutting grafted cucumber.
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