冬季豆腐柴水培诱导不定根

野生植物豆腐柴具有极大的开发价值.为了了解豆腐柴不定根生长潜力与诱导特性.于冬季在室内对豆腐柴进行了基质培养和溶液培养实验.结果表明豆腐柴枝条在冬季具有生根潜力,是否生根与环境因素具有很大的关系.在相同温度和光照下,土培豆腐柴枝条只长侧芽,不长根;而水培豆腐柴不仅长出了侧芽,还有10%的植株(清水培养)诱导出不定根.在水培条件下,平衡矿质营养能够促进根系诱导和发育,1/10Hoagland营养液中的豆腐柴比清水培养下提早6d出根,至44d时其长根的植株是清水培养的3.3倍,出根率达到33.33%.水培豆腐柴根系粗壮,呈爆炸状,很少分枝.生长素对豆腐柴不定根诱导效果不明显.

Premna microphylla Turcz. by solution culture to induce adventitious roots in winter

Wild plants Premna microphylla Turcz. is of great development value. In order to understand the growth potential and inducing characteristics of the adventitious roots in winter, Premna was cultured via soil culture or solution culture in the room in winter. The results showed that Premna branches in the winter have rooting potential, and the induction of root was greatly decided by the environmental factors. Under the same temperature and light, Premna branches by soil culture sprouted without rooting. Compared to that, Premna by solution culture has not only grown sprouts, 10 percent of the plants induced adventitious root. In solution culture, balanced mineral nutrition can promote root growth and induction. For example, Premna cultured in 1/10 Hoagland nutrient solution was induced roots 6d earlier than that without any mineral elements, and the quantity was more than3.3. By solution culture Premna has the root of stout, very few branches. Premna rooting for auxin-induced effect was not obvious.