繁殖時期、介質及吲哚丁酸(indole butyric acid)對紅毛丹插穗發根之影響

Abstract

本研究探討扦插月份、介質及吲哚丁酸（indole butyric acid, IBA）對紅毛丹（Nephelium lappaceum L.）插穗發根之影響。試驗結果顯示，1月至5月插穗平均發根率介於44.4～93.3%，以2至4月的發根率最高，平均發根率可達73%以上，6月至12月的發根率皆為0%。與未處理的對照組相比，插穗以1000 mg/l吲哚丁酸浸漬者可以提高發根率與發根數。不同栽培介質扦插結果，只有岩棉做為扦插介質時，插穗發根數明顯較多，其它栽培介質對紅毛丹插穗發根情形則無顯著差異。 In this study the effect of the propagation timing, media or indole butyric acid (IBA) on rooting of rambutan (Nephelium lappaceum L.) cutting was tested. The rooting percentage ranged from 44.4% to 93.3% during January to May, however from June to December rambutan cutting did not root. The application of indole butyric acid (IBA) significantly promoted rooting of rambutan cuttings. The more roots of cutting were inserted in rockwool slab. However, there were no significant difference on the rooting percentage, total root length, average root length and the longest length of root compared to cuttings inserted into other medium cultivated in the other media treatments.