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中国农学通报 ›› 2016, Vol. 32 ›› Issue (34): 80-84.doi: 10.11924/j.issn.1000-6850.casb16090119

• 林学 园艺 园林 • 上一篇    下一篇

不同处理方法对金银莲花种子发芽的影响

晁雄雄,孙 阎   

  1. (黑龙江大学农业资源与环境学院/农业资源利用与环境安全重点实验室,哈尔滨 150080)
  • 收稿日期:2016-09-26 修回日期:2016-10-17 接受日期:2016-10-18 出版日期:2016-12-15 发布日期:2016-12-15
  • 通讯作者: 孙 阎
  • 基金资助:
    国家自然科学基金资助项目“龙胆属不同生态类型植物早期营养发育及生态演化意义研究”(31200146);黑龙江大学实验室开放基金项目“印度荇菜种子生物学特性研究”(15K133)。

Effects of Different Treatments on Nymphoides indica Seed Germination

Chao Xiongxiong, Sun Yan   

  1. (Key Laboratory of Agricultural Resources Utilization and Environmental Security/College of Agricultural Resources and Environment, Heilongjiang University, Harbin 150080)
  • Received:2016-09-26 Revised:2016-10-17 Accepted:2016-10-18 Online:2016-12-15 Published:2016-12-15

摘要: 为了解金银莲花种子特征及萌发条件,笔者研究了其种子形态、不同的光照、温度、GA3和不同pH值的溶液对其种子萌发特性的影响。结果表明:金银莲花种子的直径为(0.704±0.048) mm,千粒重为(0.1102±0.05) g,种子离开母体时胚发育为成熟胚时期。其种子在光照条件下的萌发率高于黑暗条件;温度过高或过低均不利于种子萌发,其种子最适宜的发芽温度为25℃;一定浓度GA3溶液对金银莲花种子萌发有促进作用,浓度不宜过高;金银莲花种子对pH值有较广的适应性,pH 6~7时,种子的发芽率,发芽指数较高。因此,金银莲花种子为需光萌发,最适萌发温度为25℃,在中性偏弱酸的环境下种子易于萌发,50~400 mg/L的GA3处理其种子萌发率均可达到97%以上。

关键词: 硅, 硅, 高粱, 产量, 光合速率, 抗折力

Abstract: The paper aims to know the seed characteristics and germination condition of Nymphoides indica, the seed morphology (diameter and thousand seed weight) and seed germination characteristics under different illumination, temperature, GA3 concentration and pH solution treatments were studied. The results showed that: the seed diameter of N. indica was (0.704±0.048) mm, thousand seed weight was (0.1102±0.05) g; the seed had a mature embryo when it abscised from its parent; the rate of seed germination under light condition was higher than that under dark treatment; the over-high or over-low temperature inhibited seed germination, and the optimum temperature was 25℃; a certain concentration of GA3 solution promoted the seed germination of N. indica, but the concentration should not be too high; N. indica seed had a wide adaptability to pH value, both the seed germination rate and the germination index were higher when the pH value was between 6 and 7. Therefore, the seed of N. indica was light-needing during germination, its optimal temperature was 25℃, the neutral partial weak acid environment was good for germination, and the seed germination rate can reach more than 97 % when the GA3 concentration was from 50 to 400 mg/L.

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