| 不同NaCl浓度对黄瓜种子萌发特性的影响 |
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| 引用本文： | 曾秀存,许耀照.不同NaCl浓度对黄瓜种子萌发特性的影响[J].河西学院学报,2008,24(2). |
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| 作者姓名： | 曾秀存 许耀照 |
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| 作者单位： | 1. 河西学院生物系,甘肃,张掖,734000
2. 河西学院植物科学技术系,甘肃,张掖,734000 |
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| 摘 要： | 不同浓度的NaCl处理黄瓜种子后,通过研究其萌发过程中发芽率、胚根和下胚轴长、胚根和下胚轴以及子叶的鲜重干重、萌发的侧根数、过氧化物酶活性的变化.结果表明:低盐浓度(≤30mmol/L)对黄瓜种子萌发特性无影响或影响较小,高盐浓度(≥90mmol/L)对种子的发芽率、胚根长、下胚轴长、胚根和下胚轴的鲜重干重、子叶的鲜重、侧根数都剧烈降低,过氧化物酶(POD)活性先升后降,并与NaCl处理浓度呈负相关,但盐浓度对子叶干重的影响不明显.
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| 关 键 词： | 黄瓜种子 盐浓度 萌发特性 |
Effect of Salt Concentration on Germination Characteristics of Cucumis Sativus L seed |
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| ZENG Xiu-cun,XU Yao-zhao.Effect of Salt Concentration on Germination Characteristics of Cucumis Sativus L seed[J].Journal of Hexi University,2008,24(2). |
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| Authors: | ZENG Xiu-cun XU Yao-zhao |
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| Institution: | 1 Biology Department; Hexi university; Zhangye Gansu 734000; 2 Department of Plant Science and Technology; . Hexi university; Zhangye Gansu 734000); |
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| Abstract: | The seeds of Cucumis sativus L were treated with different concentration of NaCl to investigate the changes of germination rate, length of radicel and hypocotyls, fresh dry weight of radicel, hypocotyl and cotyledon, lateral root number and POD activity during the germination process. The results showed: NaCl had no effect or weak effect on Cucumis sativus L seed germination characteristics under the 30 mmol/L NaCl; whereas , seed of germination rate, length of radicel and hypocotyls, fresh weight and dry weight of radicel, hypocotyl , fresh cotyledon, lateral root number reduced above the 90 mmol/L NaCl; the peroxide enzyme (POD) activeness firstly rose to fall, and had a negative correlation with salt concentration. But salt concentration had no obvious effect on dry weight of cotyledon. |
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| Keywords: | Cucumber seeds Salt concentration Germination characteristics |
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