But all the conventional vegetative propagation methods have failed to reproduce it.

用常规无性繁殖方法育苗均未成功。

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Propagation methods showed no distinct actions on the increasing rate of the dry weight of rhizomes.

繁殖方式对干物质量的增长速率无明显影响。

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Autumn budding is one of walnut grafting propagation methods, as a complementary method to spring branch grafting and summer budding.

核桃秋季芽接是核桃嫁接繁殖方法之一，是春季枝接、夏季芽接的补充。

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