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頁籤選單縮合
題 名 | 低劑量加馬射線對水稻生育之效應=Effects of Low Level γ-Radiation on Growth and Yield of Rice |
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作 者 | 黃振增; 陳素娥; 胡燦; | 書刊名 | 桃園區農業改良場研究報告 |
卷 期 | 31 1997.12[民86.12] |
頁 次 | 頁13-17 |
分類號 | 434.111 |
關鍵詞 | 低劑量; 加馬射線; 水稻; Low level; γ-radiation; Rice; |
語 文 | 中文(Chinese) |
中文摘要 | 為探討低劑量加馬射線(γ-ray)對水稻秧苗生育之效應,於1996年將7箱生長14天 均勻之水稻臺農67號秧苗,送至核能研究所進行加馬射線處理,分別為2.5、5、10、20、40 、80及對照共七種處理,於3月16日在桃園區農業改良場插秧,田間排列四重複,於7月下旬 收穫。結果顯示,在秧苗經10Gy照射者略有增長,而經80Gy照射者則略呈抑制,且在插秧後 葉片逐漸平展向下彎卷而伸入水中3∼5cm,三週後逐漸淹死,死亡率在15∼94%之間。在最 高分蘗期調查時,株高及分蘗數在照射劑量2.5、5及10Gy者與對照並無顯著差異,而在20、 40及80Gy處理則隨照射劑量之增加生長顯著受到抑制,而以80Gy處理影響最大,其分蘗數僅 為5支而已。收穫時調查顯示,生育日數及成熟期隨劑量之增加而延宕生育;稻穀產量在2.5 、5、10Gy劑量與對照處理間並無顯著差異,在20、40、80Gy處理之產量則隨劑量之增加而 顯著減產,尤其是80Gy處理已嚴重減產達91.4%。產量構成要素,以80Gy處理之穗數顯著最 低,其一穗粒數雖有增加,但稔實率及千粒重則顯著降低,其它處理之穗數、千粒重差異不 顯著,唯一穗粒數均低於對照,稔實率則隨劑量之增加而遞減。 |
英文摘要 | In order to understand the effects of low level γ-radiation on the growth and yield of rice, seven level of dosages were treated to the seedling before one day of transplanting a RCBD with four replications was used. Rice variety Tainung 67 was tested. The results are summarized as follows: The seedling leaves treated with γ-ray were not affected by all treatments with the exception of 80 Gy. After transplanting the leaves treated with 80 Gy were curled gradually and bending into 3-5 cm depth of water and then 15-94% of rice plants were died. The plant height and tiller number measured during the maximum tiller stage were not affected by low level dosages of γ-ray treatment, but affected by higher level dosages γ-ray treatments such as 20, 40 and 80 Gy. The plant height and number of panicle at the harvesting stage performed the same result as the maximum tillering stage. Maturing date and yield components such as spikelet per panicle, percentage of grain fertility, 1000 grain weight and grain yield were affected by higher level dosages of γ-ray treatments such as 20, 40 and 80 Gy. Grain yield and all yield components were affected more pronounced under the dosage of 80 Gy. |
本系統中英文摘要資訊取自各篇刊載內容。