The growth of triploid plantlets could be accelerated through double grafting in the field.

田间二重接可加速三倍体小苗生长。

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Galvanized by the prospect, they are doubling their efforts and devising a raft of new strategies involving natural growth hormones, double grafting and more, to become the first to reach that goal.

受到这样前景的鼓舞，他们付出了双倍的努力，而且制定了一系列新策略比如说有关植物激素的，有关两次嫁接的等等，就是为了称为第一个达到这个目标的人。

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