Cutting Propagation by Water Culture of Casuarina equisetifolia

木賊葉木麻黃之水培繁殖

何坤益(Kuen-Yih Ho) ； 韋樹德(Shu-De Wei) ； 李明仁(Ming-Jen Lee)

《台灣林業科學》 25卷3期 (2010/09) Pp. 191-199

https://doi.org/10.7075/TJFS.201009.0191

摘要

無性繁殖可保留母樹的遺傳特性和特徵，且幼苗期之生長更為迅速。本研究使用近來發展的木麻黃嫩枝插穗於水中培植發育之技術，分析各種影響發根品質之因素，以了解處理差異與提升發根品質，研究透過3~6個月內之木麻黃嫩枝插穗，應用萘乙酸濃度50ppm之發根劑濃度有較佳發根率(82.2%)。木麻黃嫩枝插穗長度10公分以內發根品質最好，木麻黃嫩枝之插穗切基處理有較佳發根率(86.7%)，木麻黃嫩枝插穗之分叉具發根2.1多於未分叉1.8之發根數，等結果有助木麻黃水培繁殖之發根品質改善；此結果可發展為高發根率且低成本之育苗技術，提供台灣海岸更新之選擇。

關鍵字

木麻黃 ； 水培 ； 發根品質

並列摘要

Asexual reproduction ensures that advantageous genetic traits and characteristics of parental trees are passed onto progeny. Furthermore, seedlings grow very fast during the developmental period. To enhance the population size and improve reproduction of Casuarina equisetifolia, this study investigated how various factors influence the rooting quality of water-cultured C. equisetifolia. Using a recently developed technique, young branch cuttings were grown in water culture. To identify optimal conditions for water culture reproduction, various cuttings aged 3 and 6 mo were expored to a napthaleneacetic acid (NAA) concentration of 50 ppm. Cutting lengths of ＜ 10 cm had better rooting quantity than 10~15-cm cuttings. The rooting percentage of cuttings with wound treatment was 86.7% compared to 73.3% for cuttings without wound treatment. The cutting types used in this 'water culture' of rooting quantity were 2.1 for cuttings with branches and 1.8 for those without branches. The results of this study can be used to develop techniques to improve the rooting rate and lower the costs of growing C. equisetifolia seedlings for use in coastal regions of Taiwan.

並列關鍵字

Casuarina equisetifolia ； water culture ； rooting quality