电场处理对卷荚相思种子萌发特性的影响  

Germination of Acacia cincinnata Seeds Promoted by Applied Electric Field

作　　者：朱梦恬 江瑞熠 张莹[1] 邓智文 荣俊冬[1] 郑郁善[1] 陈礼光[1] ZHU Mengtian;JIANG Ruiyi;ZHANG Ying;DENG Zhiwen;RONG Jundong;ZHENG Yushan;CHEN Liguang(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China)

机构地区：[1]福建农林大学林学院,福建福州350002

出　　处：《福建农业学报》2024年第2期185-192,共8页Fujian Journal of Agricultural Sciences

基　　金：福建省科技计划区域发展项目(2015N3015);福建省科技创新团队项目(闽教科[2018]49号)。

摘　　要：【目的】分析不同电场、时间及两者交互处理对卷荚相思种子萌发特性的影响,为卷荚相思种子萌发及可持续经营提供理论参考。【方法】以卷荚相思种子为研究对象,采用室内模拟试验,以不同电场强度和处理时间为控制因素,电压强度为0.0、0.2、0.4、0.6、0.8、1.0 kV·cm^(-1),时间处理为0、15、30、45、60 min,研究不同电场强度和时间交互处理对其种子萌发特性的影响。【结果】随着电场强度增强,处理时间的延长,卷荚相思种子的发芽率、发芽势和发芽指数均呈现不同程度的变化趋势。其中,在处理时间15、30、60 min下发芽率随着电场强度的增强呈现先降后升再降的趋势,但在处理时间45 min下发芽率随着电场强度的增强呈现先升后降的趋势;而发芽势和发芽指数均在电场强度0.6~0.8 kV·cm^(-1)和处理时间45 min下处于最优状态,且与CK相比具有显著差异(P<0.05)。经过多元非线性回归分析得出,不同电场强度与时间交互处理下的最优回归方程为:Y=7.73+135.23X_(1)+1.24X_(2)-86.16X_(1)^(2)-0.00911X_(2)^(2)-0.75X_(1)X_(2)(R^(2)=0.81,P<0.05)。聚类分析结果电场和时间交互环境处理对发芽指数有非常显著的影响。【结论】电场和时间两者交互处理对卷荚相思种子萌发特性具有一定的影响,发芽率在0.6 kV·cm^(-1)处理45 min最高,说明适宜电场强度和处理时间可以提高卷荚相思种子发芽率。【Objective】Effect of electric field and treatment time applied to Acacia cincinnata seeds on germination was investigated.【Method】A.cincinnata seeds were treated by electric voltages ranging from 0(CK)to 1.0 kV·cm^(-1)for 15,30,45,or 60m prior to germination under normal conditions.Indicators of germination displayed by the seeds were analyzed.【Result】The seeds exposed to an increasing electric field for up to 60 m germinated at a rate that showed a down-up-down pattern with a peak at 45m.The germination potential and index were at the highest under 0.6-0.8 kV·cm^(-1)for 45 m and significantly different from CK(P<0.05).A best fit regression function between the applied electric field and time was found to be Y=7.73+135.23 X_(1)+1.24 X_(2)-86.16 X_(1)^(2)-0.00911 X_(2)^(2)-0.75 X_(1)X_(2)at R^(2)=0.81(P<0.05).A cluster analysis indicated an extremely significant effect of the electric field/time interaction exerted on the seed germination index.【Conclusion】The of an electric field and treatment time applied on A.cincinnata seeds significantly affected the germination with a rate peaked under 0.6 kV·cm^(-1)for 45 m.

关 键 词：卷荚相思 电压强度 种子萌发 聚类分析 非线性回归分析 

分 类 号：S722.3[农业科学—林木遗传育种]