结果表明，植物生长素类物质在一定程度上可以减轻豫杂一号泡桐丛枝病发病的症状，但不同种类的生长素对其减轻的程度存在一定的差异。
The results indicated that exgeneous auxins, to some extent, might alleviate the symptom of the witches' broom of the seedlings, but the effects of the auxins were different with NAA and IBA.
泡桐在罹丛枝病之后，除节间距缩短、叶片缩小等外部变化外，其组织结构也发生变化。
After Paulownia infected by witches broom, the distance between its nodes became, shorter and the size of the leaves became smaller.
泡桐在罹丛枝病之后，除节间距缩短、叶片缩小等外部变化外，其组织结构也发生变化。
After Paulownia infected by witches broom, the distance between its nodes became, shorter and the size of the leaves became smaller.
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