Acta Agrestia Sinica

›› 2011, Vol. 19 ›› Issue (5): 771-775.DOI: 10.11733/j.issn.1007-0435.2011.05.010

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Effects of Inter-planted Trifolium repens on the Photosynthetic Physiology of Peach Tree

YANG Wen-quan1, KOU Jian-cun2, HAN Ming-yu3, WANG An-zhu3   

  1. 1. College of Life Science, Northwest A & F University, Yangling, Shaanxi Province 712100, China;
    2. College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi Province 712100, China;
    3. College of Horticulture, Northwest A & F University, Yangling, Shaanxi Province 712100, China
  • Received:2011-04-06 Revised:2011-05-09 Online:2011-10-15 Published:2012-07-12

行间种植白三叶对桃树光合生理特性的影响

杨文权1, 寇建村2, 韩明玉3, 王安柱3   

  1. 1. 西北农林科技大学生命科学学院, 陕西杨凌712100;
    2. 西北农林科技大学动物科技学院, 陕西杨凌712100;
    3. 西北农林科技大学园艺学院, 陕西杨凌712100
  • 通讯作者: 王安柱,E-mail:hanmy@nwsuaf.edu.cn
  • 作者简介:杨文权(1975- ),男,陕西扶风人,讲师,博士研究生,主要从事植物学方面的教学和科研工作,E-mail:wenquan05@sina.com
  • 基金资助:
    科技部星火计划资助项目(2010GA850012);陕西省“13115”科技创新工程重大科技专项资助项目(2008ZDKG-08);西北农林科技大学博士科研启动经费(22050205)资助

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Abstract: The effects of Trifolium repens L.,planted between peach tree lines,on photosynthesis and chlorophyll fluorescence characteristics were measured on 1d,11d and 20d after rain during June.Peach trees without grass planted between tree lines were taken as control.Results showed relative water content(RWC),photosynthetic rate(Pn),transpiration rate(Tr),stomatal conductance(Gs),PSⅡ maximal photochemical efficiency(Fv/Fm),PSⅡ actual quantum yield of PSII photochemistry(ΦPSⅡ),electronic transfer rate(ETR) and photochemical quenching(qP) of both treatment and control plants decreased with no rain,while internal CO2(Ci) increased.After 1d rain,above physiological indices did not show any significant difference between treatment and control,while all physiological indices of each treatment did not change significantly between 1d and 11d after raining,but Ci,Fv/Fm,ΦPSⅡ,ETR and qP of control was significantly lower than those of treatment at 1d after raining(P<0.05).At 20d after raining,all physiological indices decreased except Ci increased.The Ci of control was significantly higher than that of treatment while others of control were significantly lower than that of treatments.In conclusion,as the high-temperature and no-raining day extension,the photosynthesis rate decreased and even the photosynthesis organs damaged with drought stress increasing in control.But these negative effects could be alleviated in treatments which planted Trifolium repens between peach trees.

Key words: Grass-grown orchard, Peach tree, Photosynthetic parameter, Chlorophyll fluorescence

摘要： 为探明桃园种植白三叶(Trifolium repens L.)对桃树光合生理特性的影响,以行间种植白三叶的桃树为处理、行间清耕的桃树为对照,在6月份降雨后(雨后1d)及持续无雨的不同时间(雨后11d和雨后20d),研究了行间种植白三叶对桃树叶片光合参数和叶绿素荧光特性的影响。结果表明:随着无雨天数的延长,对照和处理的叶片相对含水量(WRC)、净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、PSⅡ最大光化学量子效率(Fv/Fm)、PSⅡ非环式电子传递的光化学量子产量(ΦPSⅡ)、光化学荧光猝灭系数(qP)、PSⅡ非循环电子传递速率(ETR)均呈降低趋势,而胞间二氧化碳浓度(Ci)则呈升高趋势;在雨后1d,对照和处理间各指标均无显著差异;在雨后11d,对照和处理的Ci,Fv/Fm,ΦPSⅡ,ETR和qP均和雨后1d时无显著差异,而对照的RWC,Pn,Tr和Gs则较雨后1d时显著下降(P<0.05),且显著低于处理(P<0.05);在雨后20d,处理和对照除Ci显著升高外(P<0.05),其余指标均显著下降(P<0.05),且对照Ci显著高于处理,其余指标对照均低于处理。说明随着高温无雨天气时间的延长,产生水分胁迫的程度在逐渐增加,导致桃树光合速率下降,甚至光合中心受损,而桃树行间种植白三叶可有效缓解高温干旱对桃树的伤害。

关键词: 果园种草, 桃树, 光合参数, 叶绿素荧光

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