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选用对棉花黄萎病表现不同抗性的棉花材料,应用相互嫁接的方法将抗病和感病棉花品种组合在一起构建嫁接系统,将其种植在连作多年的棉田,调查棉花黄萎病的发生情况。结果表明,自身嫁接苗与自根苗抗性差异不显著;相互嫁接植株抗/感(接穗/砧木,下同)和感/抗组合抗病效果明显强于感/感组合,但较抗/抗组合抗病性下降。研究认为,抗病材料无论作砧木还是接穗,均能抑制黄萎病的发生,说明抗病材料植株整体对棉花黄萎病菌具有抵抗能力。
The cotton material with different resistance to Verticillium dahliae was selected and the grafting system was used to combine the disease-resistant and susceptible cotton varieties to construct the grafting system. The grafting system was planted in cotton fields that have been continuously used for many years to investigate the occurrence of cotton verticillium wilt Happening. The results showed that there was no significant difference in resistance between self-rooted seedlings and self-grafted seedlings. The disease resistance / susceptibility (scion / rootstock, the same below) and sense / Combinatorial disease resistance decreased. The study suggests that both disease-resistant materials can inhibit the occurrence of Verticillium wilt, both as rootstock and scion, indicating that the disease-resistant materials are resistant to Verticillium dahliae.