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中国农学通报

中国农学通报 ›› 2005, Vol. 21 ›› Issue (1): 204-204.

所属专题： 生物技术； 园艺

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NaCl胁迫对不同染色体倍性西瓜种子发芽特性的影响

阎志红,刘文革,石玉宝,刘海勇   

  • 出版日期:2005-01-05 发布日期:2005-01-05

Effect of NaCl stress on germination characteristics of different ploidy watermelon

Yan Zhihong, Liu Wenge, Shi Yubao, Liu Haiyong   

  • Online:2005-01-05 Published:2005-01-05

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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。

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.