棕榈藤组培苗根的诱导研究

Rooting of Rattan Tube Seedling

对短叶省藤、黄藤和单叶省藤组培苗根的诱导进行了研究。结果表明：ＮＡＡ含量高低对丛芽苗的生根与否及根系生长起决定性作用。蔗糖浓度不影响芽苗的生根与否，但影响出根快慢、出根条数和根系的生长。ＮＡＡ也在单芽苗根的诱导中起主导作用，但再附加一定量的ＩＢＡ有利于生根。丛芽苗生根培养基的优化组合为：ＮＡＡ１．０ｍｇ／Ｌ＋大量元素０．３３ＭＳ＋蔗糖２０．０ｇ／Ｌ；单芽苗生根培养基的优化组合为：ＮＡＡ１．０ｍｇ／Ｌ＋ＩＢＡ２．０ｍｇ／Ｌ＋大量元素０．３３Ｍｓ＋蔗糖２０．０ｇ／Ｌ。在优化后的生根培养基上诱导一次６０ｄ，短叶省藤、黄藤和单叶省藤丛芽苗的生根率可分别达９４．４％、９６．７％、９０．６％，单芽苗的生根率分别为８５．７％、９２．１％和６５．７％。

The rooting induction of tube seedling of Calamus egregius Burrret, C. simplicifolius C.F.Wei and Daemonorops margaritae Becc.is dealt with in this paper. NAA is the most effective plant hormone for rooting induction,and low cane sugar concentration is conducive to root growth. There is some difference between the induction medium of clump seedling and that of single seedling. The rooting ratios of clump seedlings of C. egregius,C.simplicifolius and D.margaritae can reach as high as 94.4%,96.7% and 90.6% respectively, and those of single seedling are 85.7%,92.1% and 65.7% respectively.