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題名 | 不同型間超甜玉米果穗產量與甜度之組合力探討=Combining Ability of Ear Yield and Sugar Content in Different Types of Super-Sweet Corn |
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作者 | 劉紹國; 謝光照; | 書刊名 | 臺灣農業研究 |
卷期 | 61:2 2012.06[民101.06] |
頁次 | 頁81-89 |
分類號 | 434.11 |
關鍵詞 | 超甜玉米; 熱帶型; 溫帶型; 雜種優勢; 組合力; Super sweet corn; Tropical type; Temperate type; Heterotic pattern; Combining ability; |
語文 | 中文(Chinese) |
中文摘要 | 為探討熱帶型與溫帶型玉米型間雜種組合果穗產量及甜度之表現,以熱帶型及溫帶型品種所分離之 9 個自交系及其 36 個半互交組合為材料,調查含苞葉果穗重與甜度性狀之平均值、組合力及雜種優勢值。不同類型間雜交組合果穗產量及籽粒糖度之比較,顯示含苞葉果穗鮮重為熱帶型 × 熱帶型 ≥ 熱帶型 × 溫帶型 > 溫帶型 × 溫帶型;其中高於 400 g 者的熱帶型 × 溫帶型組合有 PH 5-5 × GH 8、PH 10-23 × GH 8、PH 10-23 × Venus 8、PH 10-23 × Honey 236-1、PH 10-23 × HJ 2-7、PH 10-23 × SN 3-8 等 6 個組合。甜度在型間無明顯差異,高於 15°Brix 的組合,在熱帶型 × 溫帶型中有 BJ 12 × Venus 8、PH 5-5 × SN 3-8、PH 10-23 × SN 3-8、SH-1 × 金蜜 8 等 4 個組合。整體而言,熱帶型自交系一般帶有較多增加鮮果穗產量之有利基因;而溫帶型自交系則帶有較多增加甜度之有利基因。因此熱帶型 × 溫帶型之組合具有互補作用,可作為超甜玉米育種上理想之雜種優勢模式群。 |
英文摘要 | A field experiment was conducted during 2007 to determine combining ability of fresh ear weight and sugar content in F1 hybrids of super-sweet corn. Cross were made using four inbred lines of tropical type and five inbred lines of temperate type to produce 36 F1 hybrids for testing in the field to compare fresh ear yield (with husk) and sugar content by analysis of a half diallel set. Results showed that the fresh ear weight with husk was higher in hybrids of tropical type × tropical type and tropical type × temperate type than in hybrids of temperate type × temperate type. There was no significant difference (P > 0.05) in sugar content among hybrids of tropical type × tropical type and tropical type × temperate type. In general, the tropical inbred lines had more positive genes for the fresh ear weight, and the temperate inbred lines generally had more positive genes for sugar content. Therefore, production of hybrids by tropical type inbreds and temperate type of inbreds is a promissing strategy for breeding super sweet corn. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。