可以先进行暗培养，诱导生根之后再转到光下培养，达到壮苗、提高移栽成活率的目的。

So the dark culture induced rooting is order to strengthen shoots and improve the survial rate in transplantation.

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在根原基诱导培养阶段，激素种类和浓度是影响生根的关键。

The kinds and concentrations of exo-hormones were the key factors that affect rooting in vitro.

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选取当年生半木质化、具腋芽的香椿茎段作为外植体，诱导腋芽萌发，进行芽苗增殖和生根培养。

The new semi-ligneous stem nodes of Toona sinensis with axillary buds was taken as explant cultured in vitro to induce axillary bud sprouting and bud multiplications.

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