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Change Law of Endogenous Hormone During Storage Period of Chongming Narcissus (Narcissus tazetta var.chinensis) Ball(PDF)


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Change Law of Endogenous Hormone During Storage Period of Chongming Narcissus (Narcissus tazetta var.chinensis) Ball
LYU YifanZHANG XinzhiYAN ZiSHI YiminTANG Dongqin
(School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240 )
Chongming narcissus(Narcissus tazetta var.chinensis)hormonetemperature of storageflower bud differentiation
The bulbs of Chongming narcissus(Narcissus tazetta var.chinensis)was used as test material,which were stored at 20 ℃ and room temperature,respectively,were used to analyze the level of endogenesis hormones in bulbs for materials,by the method of ELISA(Enzyme-Linked Immuno Sorbent Assay)during storage.The related research results could be provided references for the study of flowering regulation of Chongming narcissus in the future.The results showed that GA content increased gradually up to the 7th week during storage,and the peak at 20 ℃ was higher than room temperature observed by 40.67%.IAA content was changed slightly different in the two storage conditions,IAA content at room temperature were higher than 20 ℃ in the 3rd week to the 6th week,and the flower bud differentiation process of 20 ℃ was significantly faster than the room temperature in these four weeks.The change of ZR content in room temperature was consistent with the trend of GA,but slightly different changes in 20 ℃,until the end of the sampling,was still on the rise.ABA content in two groups showed the trend down first and up later,all appeared lowest value in the 3rd week,and the minimum at room temperature was lower than 20 ℃ observed by 16.97%,then 20 ℃ obviously rose faster than room temperature.Therefore,relatively low temperature could accelerate the flower bud differentiation of narcissus bulbs.20 ℃ storage period could promote the narcissus flower bud differentiation,was conductive to the accumulation of GA content,and higher levels of the GA content could accelerate the flower bud differentiation.High levels of ZR had a close relationship with promoting the process of the flower bud differentiation.Endogenous IAA and ABA levels were negatively correlated with the flower bud differentiation.








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Last Update: 2017-03-22