可應用於種苗生產調節之馬拉巴栗種子貯藏技術改進

馬拉巴栗是臺灣重要的園藝觀葉植物之一，外銷產值可觀。然而，果實產期集中且種子難以貯藏的特性為其長期困擾的問題。過去研究發現少量種子透過貝芬替（carbendazim）處理可以成功抑制種子發霉，延長貯藏時間。為推進產業應用的可行性，本研究試驗貯藏溫度與相同容器內的貯藏數量對種子成活率的影響，並採用更簡易的貯藏裝置大量貯藏種子。結果指出10℃與13℃是較可行的貯藏溫度，而7℃則會因溫度過低而有負面影響。而相同容器內貯藏數量提高也可能會降低種子成活率。本研究透過簡易的自製裝置，在10℃冷藏環境下成功將2,400粒種子保存16週，且成活率達到95.9％，為目前已知成本低、方法簡單及數量最大的馬拉巴栗種子長期貯藏方式，應有助於解決馬拉巴栗因種子無法保存而限制種苗生產集中的困境。

關鍵字

美國花生；發財樹；異貯型

並列摘要

Pachira aquatica Aubl. is one of the economically important horticultural foliage plants in Taiwan. It brings considerable revenue by exports each year. However, a long-standing problem is that the production of the seeds is seasonal but the storage is difficult. One previous research has shown that fungal infections of the seeds can be inhibited by pretreating the fungicide, carbendazim, and the storage longevity is effectively extended. For improving the commercial potential of the technique, this study conduct experiments with large numbers of the seeds, examining the effect of different storage temperatures and whether the number of seeds per bag affects survival rates of the seeds. We also made easily-assembled containers for massive storage. The results suggested that both 10°C and 13°C are practicable for the seed storage within 16 weeks. 7°C is too cold and harmful to the seeds in long-term storage. The number of seeds per bag also affected seed survival rates: increasing the storage density decreased survival rates of the seeds. We stored 2400 seeds of this plant at 10°C with simple devices and the survival rate successfully reached 95.9% after 16 weeks of storage. It is an easy and a cost-effective method for seed storage in Pachira aquatica, and also a successful case of seed storage for this plant with highest number of seeds, longest duration of storage, and highest survival rates to date, which may contribute to the practicability of seed storage and the spreading of production in Pachira aquatica.

並列關鍵字

Pachira macrocarpa ； Malabar chestnut ； money tree ； recalcitrant

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