Effects of simulated acid rain on fertility of litchi  被引量:3

Effects of simulated acid rain on fertility of litchi

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作  者:QIU Dong-liang LIU Xing-hui GUO Su-zhi 

机构地区:[1]College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China

出  处:《Journal of Environmental Sciences》2005年第6期1034-1037,共4页环境科学学报(英文版)

基  金:TheNationalNaturalScienceFoundationofChina(No.30400061)andtheNaturalScienceFoundationofEducationalDepartmentofFujianProvince(No.K20029)

摘  要:The regulatory role of calcium in fertility of pollen and pistil under simulated acid rain 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 )5 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 )5 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.The regulatory role of calcium in fertility of pollen and pistil under simulated acid rain 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 )5 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 )5 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.

关 键 词:simulated acid rain litchi( Litchi chinensis Sonn.  POLLEN PISTIL FRUIT-SETTING ULTRASTRUCTURE 

分 类 号:X517[环境科学与工程—环境工程] S181[农业科学—农业基础科学]

 

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