頁籤選單縮合
題 名 | 臺灣狼尾草(Pennisetum purpureum)收集系農藝性狀之群叢分析=Cluster Analysis on Agronomic Traits of Napiergrass (Pennisetum purpureum) Accessions Collected in Taiwan |
---|---|
作 者 | 侯金日; 蘇建安; 林正斌; | 書刊名 | 中華民國雜草學會會刊 |
卷 期 | 32:2 2011.12[民100.12] |
頁 次 | 頁103-115 |
分類號 | 434.4 |
關鍵詞 | 狼尾草; 農藝性狀; 群叢分析; Pennisetum purpureum; Agronomic traits; Cluster analysis; |
語 文 | 中文(Chinese) |
中文摘要 | 自臺灣15個縣市收集104個野外收集之狼尾草(Pennisetum purpureum)收集系樣品,調查分糱數、叢重等共16個農藝性狀,以Statistica 7.0程式分析農藝性狀間之相關係數,並進行群叢分析。結果顯示,狼尾草農藝性狀之株高與節間長、莖徑長與莖徑寬呈正相關,相關係數分別達0.99及0.98;乾物率與莖徑長、莖徑寬呈負相關,分別為-0.72及-0.69。以15個縣市為單位,將農藝性狀進行歸群之群叢分析,各縣市收集系之遺傳距離介於43至4120間,於距離500點為截點則將收集系歸為5群,分別為第1群:宜蘭;第2群:高雄、雲林、彰化、臺中、屏東、桃園;第3群:花蓮、嘉義、南投;第4群:臺南、臺東、苗栗、新竹及第5群:臺北。藉由狼尾草之種原樣品分群,可將臺灣野生狼尾草粗略分為5群,對於生態調查或評估,可於此5處評估即可,但若須育種之選拔仍須搭配較精密之分子技術分群,較可縮短選拔時間。 |
英文摘要 | Napiergrass (Pennisetum purpureum) is a perennial forage grass widely distributed grown in Taiwan. A total of 104 samples of napiergrass samples were collected from 15 counties in Taiwan. Cluster analysis was conducted based on 16 agronomic traits of napiergrass collections and correlation coefficients between agronomic traits were determined with Statistica 7.0 program. The objectives of this study were to investigate the differences of agronomic traits and identify genetic variations by cluster analysis of napiergrass. The results showed that the correlation coefficients between plant height and node height, stem diameter length (SDL) and stem diameter width (SDW) were 0.99 and 0.98, respectively. Correlation coefficients between dry matter and SDL and SDW were -0.72 and -0.69, respectively. The genetic distance of napiergrass ranged from 43 to 4,120. All the 104 napiergrass collections were divided into 5 groups based on the Euclidean distances 500 as the critical point. The 1(superscript st) group was Eilan, the 2(superscript nd) with Kaohsiung, Yunlin, Changhua, Taichung, Pingtung and Taoyuan, the 3(superscript rd) with Hualine, Chiayi and Nantou, the 4(superscript th) with Tainan, Taitung, Miaoli and Hsinchu and the 5(superscript th) with Taipei, respectively. It was suggested that napiergrass germplasms might be taken from these 5 groups for further ecology evaluation and select the elite lines for forage might be determined by Molecular technology. |
本系統中英文摘要資訊取自各篇刊載內容。