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6种唇柱苣苔属植物叶插繁殖试验
作者: 周太久  黄仕训  邓 涛*  盘 波  何永艳  丁 莉  唐文秀  
单位: 广西壮族自治区中国科学院广西植物研究所  广西 桂林 541006  
关键词: 唇柱苣苔属  叶插  繁殖  不定根  不定芽  生根率  
分类号:S603.8
出版年,卷(期):页码:2012 ,43 ( 3 ): 页码:356-359
摘要:

【Objective】The present experiment was conducted to study the characteristics of adventitious roots and buds of six Chirita species propagated via leaf cuttings in order to provide reference for propagation of similar plants. 【Method】A single factor randomized block design sand-pot experiment was conducted using leaf cuttings, and characteristics of adventitious roots and buds of different cultivars were investigated. 【Result】The roots developed in leaf cuttings from six species appeared like callus roots. The duration of adventitious roots and buds formation was recorded as 15-36 and 56-85 d, respectively. Four species, viz., Chirita baishouensis, Chirita rongshuiensis, Chirita macrodonta and Chirita liboensis recorded over 90% rooting rate. The rooting rate of Chirita shouchengensis was as low as 69.33%, and that of Chirita cordifolia was 40.00%, which was the lowest amongst all. Among the six species, maximum root length and width were 3.09-5.25 and 27.17-30.73 cm, respectively. The maximum leaf length and width were 7.52-12.97 and 6.59-12.69 cm, respectively. The number of adventitious buds and average leaf were 1.0-2.4 and 2-4, respectively. 【Conclusion】Significant differences in duration of adventitious root and bud development were observed among six species, however, the majority of them grew pretty well with high rooting rate. It is concluded that almost of species were suitable for propagation via leaf cutting.

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