叶背有无叶毛和叶毛类型的不同对丛枝病的抗性有很大差异。

Resistance to witches' -broom disease was different among different type of leaves.

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因此，对泡桐丛枝病防治的研究是泡桐生产中长期亟待解决的问题。

Therefore, the study of PaWB is an important problem for a long time.

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玫瑰丛在修剪后又会发芽生枝的。

Rose bushes shoot again after being cut back.

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玫瑰丛在修剪后又会发芽生枝的。

Rose bushes shoot again after being cut back.

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