臺灣日本山薯（Dioscorea japonica Thunb.）植株性狀遺傳變異研究

Genetic variation of morphological characteristics for Dioscorea japonica Thunb. in Taiwan

龔財立(Tsai-Li Kung) ； 林順福(Shun-Fu Lin)

《桃園區農業改良場研究彙報》 89期 (2021/06) Pp. 1-34

摘要

藉由臺灣野生之日本山薯種原8個質量性狀及9個數量性狀調查，以評估其種原遺傳變異。結果顯示，8個質量性狀以葉基性狀頻度分布較均勻，可供遺傳變異評估及種原鑑定參考，輔以9個數量性狀，以增加種原評估或鑑定效果。9個數量性狀以葉長度、葉柄長度、葉長前寬比及葉長中寬比等4個性狀適合作為辨識種原重要指標。以群聚分析評估日本山薯種原植株外表性狀遺傳歧異性，結果顯示地區族群相互重疊。本研究對臺灣野生之日本山薯種原植株性狀進行調查，並建立其種原蒐集、評估及利用上重要資訊。

關鍵字

遺傳歧異性 ； 種原收集 ； 植株外表性狀

並列摘要

By eight qualitative and nine quantitative traits investigated to assess its genetic variation of D. japonica Thunb. in Taiwan. According to the distribution frequency, the qualitative traits of leaf base shape were in uniform. The trait is suitable for the assessment of genetic variation and species identification. The quantitative traits of leaf length, petiole length, the ratio of leaf length and terminal medial width, the ratio of leaf length and medial width could be used as important indicators for species identification. Based on plant traits, the cluster analysis showed the overlapping distribution in regions for D. japonica Thunb. In this paper, studies of D. japonica Thunb. in Taiwan have been established, and such important information will be useful in germplasm collection, evaluation and application.

並列關鍵字

genetic divergence ； germplasm collection ； plant appearance traits