Effects of simulated acid rain on fertility of litchi
  • 【DOI】

    10.3321/j.issn:1001-0742.2005.06.033

  • 【摘要】

    The regulatory role of calcium in fertility of pollen and pistil under simulated acid rein was investigated. The germination percentage of pollen treated with acid rain of pH 4.5 was 9.42% lower than ... 展开>>The regulatory role of calcium in fertility of pollen and pistil under simulated acid rein was investigated. The germination percentage of pollen treated with acid rain of pH 4.5 was 9.42% lower than that of control, and that of pH 3.5, pH 2.5 and pH 1.5 were 22.47 %, 45.49% and 71.62%, respectively. Simultaneously, the injury character of pollen was obviously observed when flowers were treated with acid rain of pH 3.5. The difference in fruit setting rate between the female flower treated with acid rain of pH 4.0 and the control was significant at p < 0.05. Ca(NO3 )2 of 0.2-0.4 mmol/L could promote pollen germination under the stress of acid rain. The beneficial function was reduced when calcium concentration surpassed 0.8 mmol/L. Spraying 2 mmol/L Ca(NO3 )2 reduced the injury of acid rain to pistil and increased fruit-setting rate significantly. The physiological importance of calcium during pollen germination and pistil development was also discussed. 收起<<

  • 【作者】

  • 【作者单位】

    College of Horticulture

  • 【刊期】

    环境科学学报(英文版) ISTIC SCI 2005年6期

  • 【关键词】

    simulated acid rain  litchi( Litchi chinensis Sonn. )  pollen  pistil  fruit-setting  ultrastructure 

  • 【基金项目】

    国家自然科学基金 福建省教委自然科学基金