頁籤選單縮合
題名 | 高粱品種間抗旱生理性狀的比較 |
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作者 | 蔡秀隆; | 書刊名 | 中華農學會報 |
卷期 | 116 1981.12[民70.12] |
頁次 | 頁15-28 |
關鍵詞 | 生理; 抗旱; 品種; 高粱; |
語文 | 中文(Chinese) |
中文摘要 | 九個高粱品種經以不同的方法測定抗旱性,以探討其抗旱生理性狀的表現,並對各種測定方法之優劣做一評價,以供今後抗旱性研究的參考。茲將試驗結果摘述如下: 1. 抗旱品種具有高的根體積、根鮮重與根乾重,其中以根乾重最適用為選拔標準。 2. 斷水處理下,株高伸長速率及葉燒率與抗旱力的大小有關。葉燒率的測定簡單,結果亦較可靠,為一值得採用的方法。 3. 以PEG-6000溶液進行發芽試驗,發現品種間的差異極為明顯,可反映抗旱性的強弱。 4. 切離葉片在PEG-6000溶液中脯胺酸含量顯著增加,但品種間的差異不顯著。 5. 葉綠素穩定性試驗未獲得適當的結果,有待進一步研討。 |
英文摘要 | The physiological characters of drought resistance of sorghum were investigated through several tests by using 9 varieties, and the tests were evaluated. The results of this study were summaried as follows. 1. Drought resistant varieties had greater root volume, heavier root weight both dry and fresh. Root dry weight may be the most suitable indication for screening. 2. When plants were subjected to a period of water stress, the varieties which had drought resistance characters had higher stem-elongation rate and lower leaf-fire rate. Screening by using leaf-fire rate method would be simple, reliable and desirable. 3. Germination rate among those varieties in PEG-6000 (Polyethylene glycol-6000) solution would reflect the degree of drought resistance. 4. Proline content showed significant accumulation in the excised leaves submerged in PEG-6000 solution. However, no significant difference among varieties was observed. 5. The chlorophyll stability index was not related to the degree of drought resistance. This trial should be continued more in detail. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。