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研究了不同化合物对褐化严重的云南红豆杉愈伤组织生长的影响。结果表明，在培养基中添加 ０． ２９ ｍｇ／Ｌ Ｌ－谷氨酰胺和 ０．０７４～０．２２ ｍｇ／Ｌ桂皮酸后能有效地抑制愈伤组织和培养基的褐化，显著改善愈伤组织的生长，并对紫杉醇的含量影响不大；桂皮酸浓度在０．３０ ｍｇ／Ｌ 以上时，则抑制愈伤组织的生长，但能提高其紫杉醇含量。
The effect of different compounds on the callus growth of T. yunnanensis with severe browning was studied. The results showed that the medium was added 0. 29 mg/L L-glutamine and 0.074-0.22 mg/L cinnamic acid can effectively inhibit the browning of callus and culture medium, significantly improve the callus growth, and the content of paclitaxel. The effect was not significant; when the cinnamic acid concentration was 0.30 mg/L or more, the growth of the callus was inhibited but the paclitaxel content could be increased.