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植物学报  2013 

花魔芋抗软腐病植株的鉴定及其抗性机理的初步研究

DOI: 10.3724/SP.J.1259.2013.00295, PP. 295-302

Keywords: 软腐病,魔芋,抗病,水杨酸,茉莉酸

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Abstract:

?通过筛选获得了对魔芋(Amorphophalluskonjac)软腐病具有较强抗性的花魔芋抗病植株,经核型分析发现,其染色体数目与普通植株一致,均为2n=26。抗病实验结果表明,该抗病植株对魔芋软腐病的抗性较普通植株强。采用酶联免疫吸附法,测定了软腐病病原菌接种30小时内的抗病与普通植株叶片中内源植物激素(SA与JA)的含量变化。结果显示,抗病和普通植株叶片中SA和JA含量变化的总体趋势明显不同。主要表现在,抗病和普通植株叶片中SA和JA积累的时间不同;此外,积累的量也有明显差异。推测魔芋抗病植株可能存在与目前大多数植株不同的抗病机制。

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