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采用组织培养技术进行黑杨胚抢救和比较不同黑杨派树种杂交组合以及不同胚抢救时间的结果表明黑杨胚抢救的最佳时间范围为授粉后30～35d。已长有3支以上须根的胚培苗进行移栽时保持的温度为20～25℃,湿度为70%左右,3d可成活,1周即可完全适应外界环境。
The results showed that the best time to rescue black poplar embryos was 30-35 days after pollination. The embryo culture seedlings that have been growing for 3 or more follicles have a temperature of 20-25 ° C and a humidity of about 70%, which can be survived for 3 days and can adapt to the external environment completely in 1 week.