Effects of exogenous ABA on endogenous hormone contents and cold resistances of Armeniaca vulgaris 'Luntaibaixing' shoots
using Armeniaca vulgaris 'Luntaibaixing'as test materials, different concentrations of ABA were sprayed during new shoot rapid growth period, contents of ABA, GA, IAA and ZR in shoots were termly determined by using the method of Enzyme-Linked Immunosorbent Assay (ELIA), and cold resistances of shoots at dormancy period were determined under artificial conditions of low temperature stress,in order to research relations of different concentrations of ABA with changes of endogenous hormone contents in shoots and cold resistance. The results show that contents of ABA and ZR in shoots,and ratios of ABA/GA and ABA/IAA were significantly increased in different concentrations of ABA treatments, while contents of GA and IAA were decreased. 60 mg/L treatment had the biggest effects on endogenous hormones, 90 mg/L treatment was secondly, but 30 mg/L treatment had no obvious effects on endogenous hormones. In addition, the semi-lethal temperature of dormant shoots was decreased by 1.35 ℃ and 1.23 ℃ in 60 mg/L and 90 mg/L treatments, and cold resistance of shoots was improved effectively.
NETL
NSTL
万方数据
维普
