- 期刊
鹽分預措對甜瓜種子發芽之影響
Effects of Salt Pretreatment on Seeds Germination of Melon (Cucumis melo L.)
摘要
以0.2（control）, 4.5, 9, 13.5, 18, 25 dS m-1等不同鹽分濃度的海洋深層水、NaCl溶液及鹽分預措探討對甜瓜（Cucumis melo L.）種子發芽之影響。隨著鹽分濃度增加，種子發芽率、發芽速率與胚根長度顯著降低，發芽時間增長。抑制甜瓜‘新世紀’、‘蜜華’與‘銀輝’種子發芽之鹽分濃度分別為18、13.5 與18 dS m-1。海洋深層水對甜瓜種子發芽與胚根長度顯著高於NaCl溶液處理者。以鹽分溶液預措處理後可提高甜瓜種子在鹽分溶液下的各項發芽指標，不同品種反應並不相同，其中以NaCl溶液預措處理者對促進甜瓜種子發芽的效果高於以海洋深層水處理者。
並列摘要
To study the effects of deep-sea saline, NaCl solution and salt pretreatment on the seed germinate of melon. For seed germination test, 'New Century', 'Sweetie' and 'Silver Light' were tested with 0.2 (control), 4.5, 9, 13.5, 18, 25 dS m-1 six salinity. The results showed significant differences in germination percentage, speed of germination and mean germination days of melon by 13.5-18 dS m-1 high salinity. Salt concentration higher than 13.5-18 dS m-1, it began to inhibit germination and radicle elongation. It seemed that salinity of 18 dS m-1 , 13.5 dS m-1 and 18 dS m-1 were threshold values for salt tolerance in melon 'New Century', 'Sweetie' and 'Silver Light', respectively. 'New Century' and 'Silver Light' were more tolerant to salinity than 'Sweetie'. It was different effect on seed germination between deep-sea saline and NaCl solution treatments. Deep-sea saline was more effective than NaCl solution for melon seed germination, especially in radicle elongation. Seeds of melon cultivars were primed with 18 dS m-1 NaCl solution or deep-sea saline for 3 days at 20℃. The results showed that priming treatments conducted with salt solution could increase salt tolerance of melon cultivars. Especially in primed with NaCl solution groups could increase the germination index under salt treatment. These results suggested that NaCl priming and deep-sea saline treatment were a useful adaptation method to improve salt tolerance of melon seedlings.