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來源資料
頁籤選單縮合
題名 | 溫度、水分及鹽分逆境對濱刀草(Poa supina Schrad.)種子發芽之影響=Effects of Temperature, Water, and Salinity Stress on Seed Germination of Poa supina Schrad. |
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作者姓名(中文) | 鄞昆田; 侯金日; | 書刊名 | 中華民國雜草學會會刊 |
卷期 | 31:1 2010.06[民99.06] |
頁次 | 頁13-24 |
分類號 | 435.1 |
關鍵詞 | 濱刀草; 水分潛勢; 鹽分逆境; 溫度; 發芽率; Poa supina schrad.; Osmotic potential; Salt stress; Temperatures; Germination percentage; |
語文 | 中文(Chinese) |
中文摘要 | 本研究主要探討不同溫度、水分及鹽分逆境下,對濱刀草(Poa supina Schrad.)種子發芽之影響。其試驗結果如下:恆溫環境下之最適發芽溫度為25℃,於5℃環境下則無法發芽;可發芽之變溫範圍為10/5℃至35/30℃之間,最適發芽溫度為25/20℃(日溫/夜溫)之變溫環境,當變溫達10/5℃時之發芽率僅4.7%,且變溫之發芽率較恆溫佳。可發芽之水分潛勢為0 MPa至-0.4 MPa之間,最適水分潛勢為0MPa。可發芽之鹽分濃度範圍為0%至1.0%之間,超過1.2%則無法發芽,於最適溫度25/20℃下,處理1.0%鹽分濃度仍有21.3%之發芽率。故濱刀草種子在最適溫度下,對於水分及鹽分則有一定程度之忍受性。 |
英文摘要 | This study focused on temperature, moisture and salt stress on seed germination under the influence of Poa supina Schrad. The results are as follows: The optimal germination under constant temperature at 25℃. than 5℃ can not germinate. The seeds at alternate germination temperature range is 10/5℃ to between 35/30℃. The best germinate temperatures was 25/20℃ (day/night) of alternate temperatures. When the temperature reached 10/5℃ when the germination rate was only 4.7%. However, alternate temperatures the germination rate than constant temperature. Optimum at osmotic potential (MPa) range was 0 MPa to between -0.4 MPa. The best osmotic potential was 0 MPa. Optimum at salt stress range was 0% to between 1.0%. than 1.2% can not germinate. When the alternate temperatures were 25/20℃ and salt stress was 1.0%. the seeds germination rate only was 21.3%. The optimum temperature on the Poa supina Schrad. For the water and salt tolerance to a certain extent. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。