| NaCl胁迫对不同染色体倍性西瓜种子发芽特性的影响 |
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| 引用本文： | 阎志红,刘文革,石玉宝,刘海勇.NaCl胁迫对不同染色体倍性西瓜种子发芽特性的影响[J].中国农学通报,2005,21(1):204-204. |
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| 作者姓名： | 阎志红 刘文革 石玉宝 刘海勇 |
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| 作者单位： | 中国农业科学院郑州果树研究所,郑州,450009 |
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| 基金项目： | 国家863计划子课题项目(No:2001AA241173)、河南省自然科学基金项目(No:0211030900). |
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| 摘 要： | 用盐水浸种催芽方法，通过对蜜枚西瓜的二倍体、三倍体、四倍体在不同浓度NaCl胁迫下种子的发芽率、胚轴长度以及鲜重、发芽指数、活力指数等指标的测定，在30~90mmol/L低浓度下，倍性之间相对发芽率没有明显差异；在120 mmol/L以上浓度时，不同倍性之间差异明显，在150mmol/L NaCl胁迫下，其M4x、M3x、M2x相对发芽率分别为77.8%、63.4%、30.6%，180mmol/L时分别为37.8%、31.7%、0，在210mmol/L时，M4x和M3x仍然有种子萌发，耐盐性为M4x＞M3x＞M2x。
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| 关 键 词： | 西瓜 二倍体 三倍体 四倍体 NaCl 胁迫 种子发芽 |
Effect of NaCl stress on germination characteristics of different ploidy watermelon |
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| Yan Zhihong,Liu Wenge,Shi Yubao,Liu Haiyong.Effect of NaCl stress on germination characteristics of different ploidy watermelon[J].Chinese Agricultural Science Bulletin,2005,21(1):204-204. |
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| Authors: | Yan Zhihong Liu Wenge Shi Yubao Liu Haiyong |
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| Institution: | (Zhengzhou Fruit Research Institute, CAAS, Zhengzhou 450009) |
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| Abstract: | Seeds of different ploidy watermelon were evaluated for germination under 0,30,60,90,120,150,180,210 mmol/L NaCl stress. The results showed that relative germination percentage of different ploidy watermelon seed have no significant difference under low NaCl concentrate, however there was significant decreased over 120 mmol/L NaCl concentrate . At 150 mmol/L, relative germination percentage among M4x、M3x、M2x was 77.8%、63.4%、30.6%, respectively. their relative germination percentage was 37.8%、31.7%、0 at 180 mmol/L, respectively. At 210 mmol/L , several seeds of M4x was germinated. The seeds salt-resistance qualities of different ploidy watermelon were: M4x＞M3x＞M2x. |
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| Keywords: | Watermelon NaCl stress Germination characteristics Chromosome ploidy |
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