愛玉帶葉枝無性繁殖

為保存並繁殖本省中海拔闊葉樹林中愛玉族羣之優良單株，本試驗首先以成年枝沾蘸生長素吲哚丁酸(IBA)和茶乙酸(NAA)之不同稀釋濃度液處理後，杆插在間歇噴霧溫室中，觀察生長素促進發根效果，結果顯示愛玉成年枝沾蘸IBA之發根效果較NAA處理者良好，其中插穗以IBA 1000 mg/l處理發根率60%，效果最佳。未經生長素處理者發根率12%。
為達到大量繁殖愛玉優良品系，本試驗繼續以壓條法促使成年枝杆插成生活苗生長出具幼年性形態之枝條，此種幼年枝生長迅速且莖節容易發生攀附根羣，有利杆插成活。將幼年枝依有無帶根及具不同葉數區分為四種插穗，直接杆插及移植於穴植管容器，內有2:2:1體積量之混台蛭石、泥炭土與堆肥之栽培介質，再置於間歇噴霧溫室調查其成活率。結果顯示帶根具一片葉枝插穗，有或無帶根而具4至6片葉枝插穗之成活率均達92%以上，而無根具一片葉枝插穗成活率為28%。建議宜以前三種插穗材料大量繁殖愛玉種苗。

關鍵字

愛玉；無性緊殖；吲哚丁酸；茶乙酸；成年枝；幼年枝

並列摘要

A study was conducted to promote rooting of the elite individual of Ficus awkeotsang Malcino from the natural population by treating the shoot of mature Stem with different concentrations of BA and NAA, and growing in sand bed equipped with intermittent mist spray system. New shoots from the mature cuttings grew very fast and regain juvenility, therefore, large quantities of juvenile cuttings were obtained. The young cuttings were divided into four classes according to the leaf numbers and rooting conditions. The survival rate by direct transplanting and dipling propagation with intermittent mist spray was investigated and the results were as follows:
1. For the mature stem, the non-treated control has a rooting rate of 12%, and the IBA treatment increase the rooting rate up to 60% with the optimum concentration at 1,000 mg/1.
2. Among the four classes of juvenile cuttings, cuttings carrying roots with the shoot tip and one leaf, and cuttings with 4-6 leaves with or without roots all have a survival rate of 92% or better. Rootless cuttings with the shoot tip and one leaf has a survival rate of 28%. Therefore, for vegetative propagation, the first three cutting conditions should be used.

並列關鍵字

Ficus awkeotsang ； vegetative propagation ； IBA ； NAA ； mature stem ； juvenile stem

國際替代計量

愛玉帶葉枝無性繁殖

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