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| 不同抗旱性柱花草品种在高渗溶液中的萌发特性 | |
| 引用本文： | 张绪元,刘国道,郇树乾,莫寒艳,罗有力.不同抗旱性柱花草品种在高渗溶液中的萌发特性[J].热带农业科学,2005,25(3):12-14,75. |
| 作者姓名： | 张绪元 刘国道 郇树乾 莫寒艳 罗有力 |
| 作者单位： | 1. 华南热带农业大学农学院,海南,儋州,571737;中国热带农业科学院热带作物品种资源研究所,海南,儋州,571737 2. 中国热带农业科学院热带作物品种资源研究所,海南,儋州,571737 3. 华南热带农业大学农学院,海南,儋州,571737 |
| 摘 要： | 利用PEG高渗溶液法研究不同抗旱性柱花草品种的萌发特性。结果表明：除质量浓度为100g/L的PEG对热研2号和热研10号的种子萌发有轻微的促进作用外,其余质量浓度PEG对种子的萌发、胚芽和胚根的生长都有抑制作用。胚根抑制率和根芽比的变化幅度基本反映了柱花草的抗旱性,可作为抗旱性评价的参考指标;质量浓度为250 g/L的PEG处理下的相对根芽比差异非常显著,可作为柱花草抗旱性评价的可靠指标。 |
| 关 键 词： | 柱花草 高渗溶液 萌发特性 抗旱性 |
| 收稿时间： | 2004-09-29 |
| 修稿时间： | 2004-09-29 |
Germination Characteristics of Stylosanthes spp. with Different Drought Resistance in Hyperosmotic Solution |
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| ZHANG Xuyuan,LIU GUODAO,HUAN Shuanqian,MO Hanyan,LUO Youli.Germination Characteristics of Stylosanthes spp. with Different Drought Resistance in Hyperosmotic Solution[J].Chinese Journal of Tropical Agriculture,2005,25(3):12-14,75. | |
| Authors: | ZHANG Xuyuan LIU GUODAO HUAN Shuanqian MO Hanyan LUO Youli |
| Affiliation: | 1 College of Agronomy, SCUTA, Danzhou, Hainan 571737; 2 Tropical Crop Genetic Resources Institute, CATAS, Danzhou, Hainan 571737 |
| Abstract: | Germination characteristics of Stylosanthes spp. with different drought resistantce was studied using PEG hyperosmotic solution. The results suggested that PEG restrained seed germination, growth of embryo and radicle but 10% mass concentration PEG promoted seed germination of Stylosanthes guianensis cv. Reyan No.2 and S. guianensis cv. Reyan No.10. The retarding rate of radicle and range of variation of root/shoot can be used as reference index of drought resistance of Stylosanthes because they reflected roughly drought resistance of Stylosanthes. The relative root/shoot ratio in 25% PEG can be used as a reliable index of drought resistance of Stylosanthes because difference of it was significant. |
| Keywords: | Stylosanthes Sw PEG germination characteristic drought resistance |
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