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題 名 | 運用分子標幟輔助選拔提升香米品系「嘉農育911303」之耐旱性=Increasing Drought Tolerance of Aroma Rice 'CNY911303' Using Marker-Assisted Selection |
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作 者 | 郭介煒; 林昆鴻; 吳永培; 林彥蓉; 徐仁浩; 許育嘉; | 書刊名 | 臺灣農業研究 |
卷 期 | 64:4 2015.12[民104.12] |
頁 次 | 頁299-316 |
分類號 | 434.111 |
關鍵詞 | 分子標幟輔助選拔; 耐旱; 水稻; Marker-assisted selection; MAS; Drought tolerance; Rice; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以秈型稻耐旱品種「旱育15 號」(‘Hang-yu 15’; ‘HY15’) 為貢獻親,稉型稻香米品系「嘉農育911303」(‘CNY911303’) 為輪迴親,透過回交方式將 ‘HY15’ 之耐旱性轉移至 ‘CNY911303’,於幼苗期利用28% 聚乙二醇6000 (Polyethylene Glycol 6000; PEG-6000) 溶液模擬缺水逆境處理,挑選耐旱的植株。並於各回交世代之BCxF1 與BC4F2 進行分子標幟輔助背景選拔,結果發現BC2F1、BC3F1、BC4F1 及BC4F2 世代回復輪迴親遺傳背景之比率分別為74.1、87.7、95.9 及96.6%。以 ‘HY15’、‘CNY911303’ 及4 個BC4F4 品系於三葉齡、五葉齡及七葉齡等3 個幼苗時期,分別以28% PEG-6000 模擬缺水之水分逆境處理,評估材料之耐旱性表現。試驗發現,4 個品系之耐旱性表現優於輪迴親 ‘CNY911303’,顯示已將 ‘HY15’ 之耐旱特性導入‘CNY911303’ 中,培育出高耐旱之香米新品系。進一步評估4 個耐旱品系 (BC4F4) 在水分管理下的產量表現,結果發現 ‘DT73’、‘DT85’ 及 ‘DT86’ 的產量顯著高於 ‘CNY911303’,且 ‘DT73’ 的產量更高於5,000 kg ha-1。據此顯示,獲選之耐旱香米品系在缺水環境下具有栽培價值,未來有機會進一步發展成為台灣耐旱香米新品種。 |
英文摘要 | To introgress the gene(s) conferring drought-tolerance to the Taiwanese aromatic japonica line ‘Tainung-Chianung-yu 931103’ (‘CNY911303’), the drought-tolerant variety ‘Hang-yu 15’ (‘HY15’) was used as a donor parent crossed to ‘CNY911303’. Four backcrossings were conducted and the progenies of each backcross generation BCxF1 were screened for drought tolerance by the treatment of 28% PEG-6000 solution and consequently selected by molecular markers to recover the recurrent parent’s genome. The percentages of recurrent parent recovery within selected individuals were 74.1, 87.7, 95.9, and 96.6% in BC2F1, BC3F1, BC4F1, and BC4F2 respectively. The ‘HY15’, ‘CNY911303’ and four BC4F4 drought-tolerant lines were further evaluated for drought tolerance under the treatment of 28% PEG-6000 at three-leaf, five-leaf, and seven-leaf stages. The four BC4F4 lines exhibited higher tolerance to drought stress than the recurrent parent, implying that the drought-tolerant characteristic of ‘HY15’ was successfully transferred to ‘CNY911303’ using marker assisted selection (MAS). In addition, 4 drought-tolerant BC4F4 lines were evaluated for grain yields. Among them, ‘DT73’, ‘DT85’, and ‘DT86’ have significant better yield than ‘CNY911303’, and ‘DT73’ produced more than 5,000 kg per hectare, indicating that these three drought-tolerant lines can be grown in fields underwater saving cultivation system. These drought-tolerant lines will be registered as new aromatic rice varieties for water-saving rice production in Taiwan in the future. |
本系統中英文摘要資訊取自各篇刊載內容。