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題 名 | 超甜玉米自交系籽粒種皮厚度之變異與組合力分析=Variation and Combining Ability of the Traits for Pericarp Thickness in Inbreds 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 | 59:2 2010.06[民99.06] |
頁 次 | 頁112-125 |
分類號 | 434.11 |
關鍵詞 | 超甜玉米; 熱帶型; 溫帶型; 種皮厚度; Super-sweet corn; Zea mays; Tropical type; Temperate type; Pericarp thickneness; |
語 文 | 中文(Chinese) |
中文摘要 | 熱帶型玉米品種華珍及彩珍所分離的自交系具有較薄的種皮,同時種皮厚度小於50 μm的自交系數目也較多;其次為夏蜜、Pacific hybrid 5與泰國TN 103等三個品種;種皮較厚者有Pacific hybrid 10、雙魚與春蜜等品種,所分離種皮厚度小於50 μm的自交系數目也較少。熱帶型品種籽粒不同部位的種皮厚度有明顯差異,大多品種以冠蓋最薄,其次為發芽面,較厚者為非發芽面部位。溫帶型品種好滋味、興農3號、金蜜與新吉士所分離的自交系具有較薄的種皮,同時種皮厚度小於50 μm的自交系數目也較多;其餘品種表現相近,但種皮厚度小於50 μm的自交系數目不少,可利用之材料亦較多。溫帶品種以冠蓋則具有較薄的種皮厚度,而發芽面種皮與非發芽面種皮厚度相近。熱帶型品種除華珍與彩珍外,大部份其種皮厚度較溫帶型品種厚。以熱帶型及溫帶型品種分離之10個自交系及全互交組合為材料進行組合力分析,顯示整粒平均種皮厚度呈現熱帶型 × 熱帶型為 >熱帶型 × 溫帶型 > 溫帶型 × 溫帶型之趨勢。而低於70 μm者有13個組合,其中熱帶型 × 溫帶型有7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及減少果皮厚度之有利基因。因此熱帶型 × 溫帶型之組合具有互補作用,為超甜玉米育種上理想之雜種優勢模式群。 |
英文摘要 | The number of inbred lines with thin pericarp (<50 μm in thickness) varied among the tropical type of super-sweet corn (Zea mays) investigated: high in the varieties, Bright Jean and Su-Jean, moderately high in the varieties Summer-Honey, PH 5 and TN 103 and low in the varieties PH 10, Two-Fish, and Spring-Honey. The thickness of pericarp also varied with different areas of the same corn kernel: thin at the crown cap, moderately thick at the germinal side, and thick at the abgerminal. In the temperate type of super-sweet corn, the varieties Hao Zih Wei, Sinon 3, Golden honey and Sin Ji Shih, produced more inbred lines with thin pericarp (< 50 μm in thickness) than the other varieties tested. Result of analysis of a full diallel set of crossing combination (90 crosses) of 10 inbred lines (5 tropical type and 5 temperate type). Results showed the average pericarp hickness of each kernel was the highest for the seeds of tropical type × tropical type (112.0 μm in thickness), followed by the seeds of tropical type × temperate type (87.34 μm in thickness) and temperate type × temperate type (68.75 μm in thickness). Among the 13 crosses with seed pericarp thinner than 70 μm, seven crosses were from the tropical type × temperate type. Therefore, the possibility of breeding super-sweet corn with yield and good quality (sweetness and thin pericarp) would be increased by selections from crosses between tropical and temperate type of corn. |
本系統中英文摘要資訊取自各篇刊載內容。