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1、精品文档,仅供学习与交流,如有侵权请联系网站删除配合力的计算Griffing提出的双列杂交共有4种方法,其中以方法4最常用。有5个亲本,即p=5,不包括自交和反交,共有组合数10个a=p(p-1)/2,完全随机区组设计,3次重复(b=3)。第一步,离差平方和的计算。校正值:C=X2./ab=294.22/30=2885.12总的St=X2ijk-C=3373.96-2885.12=488.84重复Sb=X2.k/a C=(96.42+102.32+95.52)/10-2885.12=2.73一般配合力Sg=X2i./b(p-2)-4X2./bp(p-2)=(102.72+1672+97.52+
2、122.22+992)/9-294.22/45 =8075.15-7693.66=381.49特殊配合力Ss=X2ij./b-X2.j./b(p-2)+ 2X2/b(p-1)(p-2) =(30.92+18.22+29.52+24.12+432+53.12+402+20.52+15.82+19.12)/3-(102.72+1672+97.52+1222+992)/9+294.22/18=80.20机误Se=St-Sb-Sg-Ss =24.42父本母本345Xi.110119.85.66.75.9911108.69.65.9102.7230.913141616.71917151312167318
3、.24367.47.15.35.64.997.5429.55320.57.157122.2524.14015.819.199和588.4第二步,方差分析自由度平方和均方重复b-1=22.73Mb=1.37一般配合力p-1381.49Mg=95.37特殊配合力p(p-3)/2=580.2Ms=16.04试验误差(a-1)(b-1)=1824.42Me=1.36第三步,遗传参数估算2g =(Mg-Ms)/b(p-2)=8.812s =(Ms-Me)/b=4.89两种配合力的相对重要性比较如下:一般配合力2g /2g+2s=8.81/(8.81+4.89)=64.31%特殊配合力2s /2g+2s=
4、4.89/(8.81+4.89)=35.69一般配合力效应值计算如下:g =(pXi. 2X.)/p(p-2)g1 =(5*34.2-196)/15= -1.67g2 =(5*55.6-196)/15= 5.47g3 =(5*32.5-196)/15= -2.23g4 =(5*40.7-196)/15= 0.5g5 =(5*33-196)/15= -2.07特殊配合力效应值计算如下:S=Xij (Xi.+X.j)/(p-2)+2X./(p-1)(p-2)S1*2 = 10.3-(34.2+55.6)/3+98/6=-3.3S1*3 = 6.1-(34.2+32.5)/3+98/6=0.2S1*4 = 9.8-(34.2+40.7)/3+98/6=1.17S1*5 = 8-(34.2+33)/3+98/6=1.93S2*3 = 14.3-(55.6+32.5)/3+98/6=1.27S2*4 = 17.7-(55.6+40.7)/3+98/6=1.93S2*5 = 13.3-(55.6+33)/3+98/6=0.1S3*4 = 6.8-(32.5+40.7)/3+98/6=-1.27S3*5 = 5.3-(32.5+33)/3+98/6=-0.2S4*5 = 6.4-(40.7+33)/3+98/6=-1.83【精品文档】第 2 页