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基于液相色谱-串联质谱法分析茉莉酸与果梅休眠的关系

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摘要 建立了不同果梅(Prunus mume Sieb.et Zucc)品种4个休眠时期花芽的茉莉酸(jasmonic acid)含量的液相色谱-串联质谱(liquid chromatography-tandem triple quadrupole mass spectrometric,LC-MS/MS)测定方法。样品经过甲醇提取,Agela Cleanert SPE-NH2固相萃取小柱净化。色谱分离采用C18反相柱,以乙腈-水(水相含0.05%乙酸)为流动相梯度洗脱,质谱分析采用ESI离子源、二级串联质谱、负离子模式下进行检测。测定结果,方法标准曲线线性良好,茉莉酸r=0.999 2,平均回收率范围为78.18%~97.49%,相对标准偏差(RSD,n=3)为1.25%~8.27%。该方法操作简便,灵敏度高,选择性好,回收率高,适合果梅花芽中茉莉酸的测定。结果表明,被测2个品种的果梅花芽中,休眠解除和生态休眠时期的茉莉酸含量高于内休眠和抑制性休眠时期,推测内源激素茉莉酸可能有抑制果梅休眠和促进花芽正常生长的作用。本试验对进一步探讨果梅休眠与内源激素茉莉酸的关系打下了一定的基础。
出处 《江苏农业科学》 北大核心 2015年第5期167-170,共4页 Jiangsu Agricultural Sciences
基金 江苏省科技支撑计划(编号:BE2011458 BE2012361) 江苏省自然科学基金(编号:BK2011642) 江苏省"青蓝工程"
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