在植物组织培养过程中，继代培养是其中的重要环节，而长期继代则是种质资源离体保存的必要手段。
Subculture is an important link in the process of the tissue culture and the long-term subculture is the essential method for conservation in vitro of germplasm.
试验对影响悬浮细胞生长的因子如培养基中植物生长调节剂组成、初始接种量和继代时间等进行了优化。
Growth of suspension cell lines was affected by the concentration of PGR, the initial cell density and days after sub-cultured, et al.
本文就代乳料中用植物性蛋白源替代乳蛋白源在犊牛培育中的应用效果作一综述。
The article described the application result of Plant protein replacing milk protein in calves breeding.
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