The protective effect of calcium on muskmelon seedling harmed by acid rain was studied.

本文研究了钙对酸雨伤害甜瓜幼苗的影响。

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The thin-skin muskmelon inbred lines were used to study the effects of explants, seedling age, and hormones on plant in vitro regeneration.

以甜瓜薄皮自交系为材料，研究了外植体、苗龄、激素等因素对甜瓜离体再生的影响。

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