碳水化合物濃度對水稻再生能力之影響
Other Title
Effect of Total Nonstructial Carbohydrate Content on Rice Ratooning Ability
Journal
行政院農業委員會花蓮區農業改良場研究彙報
Journal Issue
1
Pages
5-6
Date Issued
1985-03
Author(s)
劉瑋婷
蘇昌吉
魏夢麗
劉大江
Wei-Ting Liu
Chan-Chi Su
Meng-Li Wei
Dah-Jiang Liu
Abstract
為探究非構造性碳水化合物（Total Nonstructural Carbohydrate, TNC）對水稻再生能力之影響，以已知再生力較高之品種台農秈18號與再生力較低之高雄139號為材料，於一期作抽穗期及抽穗後15日分別進行去穗或去葉處理，收穫後測定莖桿基部TNC濃度，兩週後調查田間再生力。試驗結果發現對照之台農秈18號莖基TNC濃度與再生力分別高達35.9%與124.0%，而高雄139號則僅為9.8%與15.9%。去穗處理可提高TNC濃度與再生力，對高雄139號之效果尤為顯著；反之，抽穗後15日去全部葉片使高雄139號全無再生芽萌發，並顯著降低台農秈18號之再生力。同一時期去除二分之一葉片亦有類似效果，唯影響較小。試驗結果並證實收穫期莖桿基部TNC濃度與每欉水稻再生芽數及再生力之間呈極顯著之正相關（r分別為0.9167**及0.9215**），但前作母株穗數則與再生芽數，再生力或TNC濃度之間均無相關關係存在。
Experiment was conducted to determine the effect of total nonstructural carbohydrate (TNC) content on rice ratooning ability. Two cultivars, Tainung Sen 18 known to have a high ratooning ability and kaohsiung 139 known to have a low ratooning ability, were used. In the first crop, panicle removal and defoliation were made at heading stage and 15 days after heading. TNC content of rice at the stem base was determined at harvest time, and ratooning ability evaluated 2 weeks after harvesting. The TNC conent and ratooning ability of untreated Tainung Sen 18 plants were 35.9% and 124.0%, respectively, while those of the untreated plants of Kaohsiung 139 were 9.8% and 15.9% respectively. Panicle removal increased TNC content and ratooning ability, especially for Kaohsiung 139, but no ratooned buds were produced from plants completely defoliated 15 days after heading. The ratooning ability of Tainung Sen 18 also significantly decreased in completely defoliated plants, while 50% defoliation produced similar result to a lesser extent. The TNC content of rice at the stem base was significantly correlated with the number of ratooned tillers per hill (r=0.9167**) and with ratooning ability (r=0.9215**). The panicle number of mother plants was not significantly correlated to the number of tillers, the ratooning ability and the TNC content.
Publisher
農業部花蓮區農業改良場
Type
journal article