2 , 4 - Dichlorophenoxyacetic acid soaking promotes rooting in stem tip cuttings of Hypericum p向foratum
نویسنده
چکیده
Rooting and shoot growth were evaluated on stem tip cuttings of砂pencumpe功ratum receiving various auxin soaking treatments. Five-cm-Iong stem tips (0.08 g fresh weight in average) were soaked in IAA, 1 BA, NAA and 2,4-D solutions at 5, 25 , 125μM for 10 min, and then placed in a rockwool block for three weeks. A deionized water soaking treatment was served as a control. The results indicated that the stem tip cuttings of non仕eated control rooted fairly well within 3 weeks. However, IAA and NAA soakings at the given doses inhibited the rooting oftreated cuttings. The stem tip cuttings of 砂pericum pe祕ratu rooted and developed best when they were treated with a 5μM 2,4-D solution. Moreover, 5μM 2,4-D soaking tended to accelerate the rooting of stem tip cutting. Thus the 5 戶口,4-D treated stem tip cuttíngs míght be able to transplant earlier than non-treated cuttings.
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