Suitable external hormone may also significantly promote grafting survival rate. There was a lower survival rate and a slower scion growth in the combination of tomato/cucumber or eggplant/cucumber than in the combination of eggplant/tomato.
结果表明：在试管内嫁接中，以顶接法、苗龄为7d的番茄作为砧木有利于提高嫁接成活率和接穗生长；保留砧木子叶有利于提高嫁接成活率，但其萌发的腋生芽对接穗生长不利；适当的外源激素处理接穗和添加到培养基中可以提高嫁接成活率；番茄或茄子与黄瓜的嫁接成活率较低，茎尖生长缓慢。
参考来源 - 嫁接及其接合部变异的研究Effective time of exogenous hormones enhancing EUG content is between 30-45 d.9.
8.外源激素对提高杜仲叶内胶含量的有效时期在30-45 d之间。
参考来源 - 杜仲叶内胶含量及分子质量动态变化研究·2,447,543篇论文数据，部分数据来源于NoteExpress
结果表明外源激素促进了该基因的表达。
The results are as follows: Exogenous hormones enhance HFT gene expression.
早期阶段的幼胚培养成苗与外源激素有一定关系。
Plants normally grown at early stage in young embryos are related to exogenous hormones.
喷施外源激素是克服种间杂交不亲和性的有效途径。
Spraying GA and NAA are the effective methods to overcome the incompatibility in specific hybridization.
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