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.
叶毛密度和可溶性糖含量与不选择性呈负相关，游离氨基酸和表皮层细胞厚度与不选择性呈正相关。
Both pubescence density and soluble sugar were negatively related to non-preference, while the free amino acids and thickness of epidermal cell positively.
对T 2代双突变体植株表型初步观察显示，植株有明显矮化现象，但维管束和叶毛的发育基本正常。
Primary observation to T2-generation showed that double mutant plant had obvious dwarf phenotype, but had no defect in leaf trichome and vasculature.
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