铅污染对烟草种子发芽性状的影响  

Influence of Lead Pollution on the Germinative Traits of Tobacco Seeds

作　　者：郑昀晔[1] 马文广[1] 李永平[1] 宋碧清 牛永志 索文龙 

机构地区：[1]云南省烟草农业科学研究院,云南玉溪653100 [2]玉溪中烟种子有限责任公司,云南玉溪653100

出　　处：《安徽农业科学》2010年第4期1828-1831,共4页Journal of Anhui Agricultural Sciences

基　　金：云南省烟草公司科技基金项目(08A06)

摘　　要：[目的]探讨铅对烟草种子发芽和幼苗生长的影响。[方法]以烟草品种V2、云烟85和云烟87的种子为试材,通过测定种子的发芽势、发芽率、发芽指数并计算其活力指数获得数据,利用SAS软件分析数据并建立了烟草种子活力与铅浓度的预测模型。[结果]Pb浓度为150mg/L时,V2的种子发芽势显著低于对照。当Pb浓度为200mg/L时,3个品种的种子发芽势均显著低于对照。随着Pb浓度的增加,幼苗的苗长显著缩短,干重显著下降。发芽势、发芽率、发芽指数和苗高的回归预测模型分别为Y1=89.69-11.21X3-3.83X4-4.89X2X3-5.17X2X4;Y2=55.78-12.94X1+5.64X2-71.76X3-14.67X4-7.55X1X3+26.67X1X4-10.17X2X4+19.43X1X5;Y3=22.26+4.46X1-1.53X2-3.45X3-0.54X4-0.73X1X3-0.83X2X3-0.72X2X4;Y4=0.14-0.04X1+0.04X2-0.18X3-0.06X4+0.02X5-0.02X2X3+0.06X1X4-0.05X2X4+0.07X1X5-0.02X2X5。[结论]该研究为预报铅污染对烟草种子萌发的毒害效应提供了参考。[Objective]The purpose was to discuss the influence of lead（Pb） on the seed germination and seedling growth of tobacco.[Method]With the seeds of tobacco varieties V2,Yunyan85 and Yunyan87 as tested materials,the data were obtained through determining their germination energy,percentage and index and calculating their activity index.Then the data were analyzed and the prediction model of tobacco seed activity and Pb concn.was established by using software SAS.[Result]When the Pb concn.was 150 mg/L,the seed germination energy of V2 was significantly lower than that of CK.When the Pb concn.was 200 mg/L,the seed germination energy of the 3 varieties were significantly lower than that of CK.As the Pb concn.was increased,the seedling lengths percentage were shortened significantly and their dry weights were decreased significantly.The regression prediction models of germination energy,and index were Y1 = 89.69-11.21X3-3.83X4-4.89X2X3-5.17X2X4;Y2 = 55.78-12.94X1 ＋ 5.64X2-71.76X3-14.67X4-7.55X1X3 ＋ 26.67X1X4-10.17X2X4 ＋ 19.43X1X5;Y3 = 22.26 ＋ 4.46X1-1.53X2-3.45X3-0.54X4-0.73X1X3-0.83X2X3-0.72X2X4;Y4 = 0.14-0.04X1 ＋ 0.04X2 0.18X3-0.06X4 ＋ 0.02X5-0.02X2X3 ＋ 0.06X1X4-0.05X2X4 ＋ 0.07X1X5-0.02X2X5 resp.[Conclusion]This study provided reference for predicting the toxic effect of Pb pollution on the seed germination of tobacco.

关 键 词：烟草 铅 种子活力 预测方程 回归分析 

分 类 号：S572.041[农业科学—烟草工业]