| 海盐胁迫对苇状羊茅和多花黑麦草种子发芽的影响 |
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| 引用本文： | 于辉,沈益新.海盐胁迫对苇状羊茅和多花黑麦草种子发芽的影响[J].草业科学,2004,21(10):41-44. |
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| 作者姓名： | 于辉 沈益新 |
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| 作者单位： | 南京农业大学动物科技学院,江苏,南京,210095;南京农业大学动物科技学院,江苏,南京,210095 |
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| 基金项目： | 江苏省科技厅推广项目，南方农区奶业现代化生产技术集成与产业化示范项目 |
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| 摘 要： | 用不同浓度的海盐溶液处理,研究了苇状羊茅Festuca arundinacea和多花黑麦草Lolium multiflorum种子在发芽阶段对海盐胁迫的反应.结果表明,海盐浓度低于6.4 g/L时,2种牧草种子的发芽不受影响;随海盐处理浓度增高,种子发芽率和种子活力指数逐渐下降.2种牧草相比,多花黑麦草种子发芽阶段对海盐的耐受性高于苇状羊茅.苇状羊茅和多花黑麦草种子发芽率降至50%的农业盐渍临界值的海盐浓度分别为19.98和22.78g/L.
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| 关 键 词： | 多花黑麦草 发芽 海盐胁迫 苇状羊茅 活力指数 |
| 文章编号： | 1001-0629(2004)10-0041-03 |
Effect of Sea-salt Stress on Germination of Tall Fescue and Italian Ryegrass |
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| YU Hui,SHEN Yi-xin.Effect of Sea-salt Stress on Germination of Tall Fescue and Italian Ryegrass[J].Pratacultural Science,2004,21(10):41-44. |
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| Authors: | YU Hui SHEN Yi-xin |
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| Abstract: | Germination response of tall fescue (Festuca arundinacea cv. Fawn) and Italian ryegrass (Lolium multiflorum cv .Barspectra) treated with sea-salt solutions were studied. The results showed that irrigation with sea-salt solution lower than 6.4 g/L had no effects on germination of both species. With salinity increasing, germination rate and seed vigor index decreased gradually. The sea-salt tolerance of Italian ryegrass during germination period was higher than that of tall fescue. Sea-salt concentration causing 50% germination rate decrease in tall fescue and Italian ryegrass were 19.98 (g/L) and 22.78 g/L, respectively. |
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| Keywords: | Italian ryegrass germination sea-salt stress tall fescue vigor index |
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