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題 名 | Effect of NaCl on Germination, Growth, and Soluble Sugar Content in Chenopodium Quinoa Willd. Seeds=氯化鈉對Chenopodium quinoa Willd.種子發育、生長及水溶性糖含量的影響 |
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作 者 | Prado,Fernando E.; Boero,Cecilia; Gallardo,Miriam; Gonzalez,Juan A.; | 書刊名 | Botanical Bulletin of Academia Sinica |
卷 期 | 41:1 2000.01[民89.01] |
頁 次 | 頁27-34 |
分類號 | 434.28 |
關鍵詞 | 發芽; 生長; 鹽逆境; 種子; 可溶性糖量; Chenopodium quinoa; Germination; Growth; Saline stress; Seeds; Soluble sugar content; |
語 文 | 英文(English) |
中文摘要 | 本研究乃探討氯化鈉對 quinoa ( Chenopodium quinoa Willd. )種子及發芽的 子葉及胚軸在早期發育時的影響。在高鹽的環境下發育速率很明顯地下降。發芽率的延緩與 氯化鈉濃度並非呈線性關係。 在 0.4 M 氯化鈉浸泡 14 小時下,發芽率只有 14 %,然而 控制組在同樣的時間下發芽率可達到 87 %。在 14 小時的氯化鈉處理後無法發芽的種子百 分比比用蒸餾水處理的還要低(分別是 7 %及 16 %)。 在這些以氯化鈉處理後而無法發 芽的種子中,若以蒸餾水清洗則可得到一個很高的發芽率( 67 %)。在鹽水處理後胚軸與 子葉的濕重均下降。最明顯的濕重增加發生在胚軸,經過 10 小時的發育之後,以蒸餾水處 理的種子比以鹽水處理者的胚軸濕重高 3 倍。 在蒸餾水處理的環境下,胚軸的水含量在前 10 小時很顯著的增加,然後則維持恆定。 在鹽水處理的環境下,水含量並沒有顯著的改變 。氯化鈉並不會強烈的抑制胚軸或子葉的乾重。胚軸與子葉的總可溶性糖含量,在蒸餾水處 理的環境中很明顯的上揚,並在 6 小時後達到顛峰。 在有氯化鈉的環境下,胚軸的萄葡糖 與果糖含量有降低的情形,然而子葉的萄葡糖與果糖含量則沒有顯著的不同。以氯化鈉處理 的種子其子葉的蔗糖含量比控制組高。關於鹽水逆境對發芽、水含量、幼苗的生長及可溶性 糖含量彼此關係的影響將在本研究中進行討論。 |
英文摘要 | The influence of NaCl on germination rate, growth, and soluble sugar content in quinoa (Chenopodium quinoa Willd.) seeds and seedling components (cotyledons and embryonic axes) during early germination was investigated. Under saline conditions germination decreased markedly. The delay in germination rate was not linear. In presence of 0.4 M NaCl, the percentage of germination was only 14% after 14 h, whereas the control at the same time reached maximum germination (87%). The percentage of aborted seeds after 14 h in NaCl was lower than in distilled water (7% and 16%, respectively). A high percentage (67%) of the ungerminated seeds from saline treatment germinated after washing with distilled water. Fresh weight was reduced by salinity in both embryonic axes and cotyledons. The highest increase in fresh weight was observed in embryonic axes, where an increase up to 3-fold higher occurred in distilled water than in saline conditions after 10 h of development. The water content of embryonic axes in distilled water increased considerably for the first 10 h, then remained constant thereafter. In saline conditions, no significant changes were observed in water content. NaCl did not strongly inhibit dry mass production in either embryonic axes or cotyledons. Total soluble sugar content increased markedly in distilled water, peaking after 6 h for both embryonic axes and cotyledons. Reduced glucose and fructose contents were found in embryonic axes in the presence of NaCl. However, in the cotyledons, the glucose and fructose contents did not differ significantly. Levels of sucrose were higher in NaCl-treated cotyledons than in control seeds. The relationships between germination, water content, seedling growth, and soluble sugar content in relation to salt stress are discussed. |
本系統中英文摘要資訊取自各篇刊載內容。