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中国农学通报 ›› 2017, Vol. 33 ›› Issue (16): 19-22.doi: 10.11924/j.issn.1000-6850.casb17030073

• 农学 农业基础科学 • 上一篇    下一篇

低氮胁迫对不同谷子品种生长和光合特性的影响

李明哲,时丽冉,郝洪波,崔海英,张书存   

  1. 河北省农林科学院旱作农业研究所,衡水学院生命科学系,河北省农林科学院旱作农业研究所,河北省农林科学院旱作农业研究所,衡水市桃城区农业技术推广中心
  • 收稿日期:2017-03-12 修回日期:2017-03-21 接受日期:2017-03-24 出版日期:2017-06-08 发布日期:2017-06-08
  • 通讯作者: 时丽冉
  • 基金资助:
    现代农业产业技术体系建设专项-国家谷子糜子产业技术体系衡水综合试验站(CARS-07-13.5-B3);衡水市科学技术研究与发展计划项目- 适合机械收获的优质夏谷新品种选育及应用(13036-4)。

Effects of Low Nitrogen Stress on Growth and Photosynthetic Characteristics of Different Millet Varieties

  • Received:2017-03-12 Revised:2017-03-21 Accepted:2017-03-24 Online:2017-06-08 Published:2017-06-08

摘要: 以12个谷子品种为试验材料,用蛭石为培养基,分别用氮浓度为5 mmol/L与0.1 mmol/L 的营养液养处理一个月后,测量鲜重、根长、根冠比、叶绿素含量、光合速率等生理指标。结果表明:低氮胁迫后不同品种的鲜重、叶绿素含量均不同程度降低,但叶绿素a/b升高,所有品种根冠比升高.所有品种的光合速率在低氮胁迫下不同程度降低。综合评价得出:龙谷31、龙谷25、晋谷41、冀谷31耐低氮胁迫能力较强。

关键词: 牧草产品, 牧草产品, 国际贸易, 启示

Abstract: 12 millet varieties cultivars with vermiculite were used as experimental materials. The physiological indexes such as fresh weight, root length, root / shoot ratio, chlorophyll content and photosynthetic rate were measured after treatment with nutrient solution with nitrogen concentration of 5 mmol / L and 0.1 mmol / L for one month.The results showed that the fresh weight and chlorophyll content of different cultivars decreased after low nitrogen stress, but the chlorophyll a / b increased, and the root / shoot ratio of all varieties increased, and the photosynthetic rate of all varieties decreased at low nitrogen stress.The comprehensive evaluation was: LONGGU 31, LONGGU 25, JINGU 41, and JIGU 31 were resistant to low nitrogen stress.