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題名 | Genetic Variance of Brix, Purity, and Sugar Content at Different Maturity Stages in Sugarcane with Special Reference to the Merit of Indirect Selection for Brix=甘蔗不同成熟期錘度、純度與糖分之遺傳變異並論間接選拔錘度之優點 |
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作者姓名(中文) | 張翊袖; | 書刊名 | 臺灣糖業研究所研究彙報 |
卷期 | 156 1997.06[民86.06] |
頁次 | 頁1-13 |
分類號 | 434.71 |
關鍵詞 | 遺傳變異; 成熟; 間接選拔; f糖分; 錘度; 遺傳所得; 選拔效率; Genetic variance; Maturity; Indirect selection; Sugar content; Brix; Genetic gain; Selection efficiency; |
語文 | 英文(English) |
英文摘要 | 研究錘度、純度及糖分等三個有關糖分的性狀發現在成熟初期遺傳變異最大,分 別為 1.56,6.58,1.38,而在成熟後期遺傳變異則最小,分別為 0.28,0.57,0.28。上述 有關糖分之性狀其廣義遺傳率在成熟初期最高,分別達 0.95,0.94 和 0.95, 而在成熟後 期最低,分別為 0.83,0.73,0.89。 在不同成熟階段,錘度與糖分的廣義遺傳率均非常接 近。本研究指出在成熟初期選拔糖分有關性狀之期望遺傳所得大於在其它成熟選拔之期望遺 傳所得。 另發現間接選拔錘度之糖分改進量為直接選拔糖分改進量之 92-97 %,表示當考 慮到糖分分析消耗大量費用及人工時,間接選拔度可以取代直接選拔糖分。本研究並發現當 錘度之選拔強度大於糖分之選拔強度時,間接選拔度的效率將超出直接選拔糖分的效率。 ucrose-related traits will have higher expected genetic gains at the early maturity stage than selection practiced at other maturity stages. The amount of improvement in sugar content achieved by indirect selection for Brix was estimated as high as 92-97% of the amount of improvement obtained by direct selection for sugar content under the same selection intensity. This suggests that indirect selection for Brix could be used to substitute for direct selection for sugar content, especially considering the high cost and laborintensive nature of sugar-content analysis. It was also found that the efficiency of indirect selection for Brix will be higher than that of direct selection for sugar content when a higher selection intensity is applied to Brix selection. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。