Monte Carlo simulation for analyzing ADAA models and seed models based on the triallel mating design
Zicheng Xu, Debin Lu · He'nan nongye daxue xuebao · 2003
Monte Carlo simulations were performed to prove the efficacy of the genetic models and its statistic methods for three-way cross. The results indicated that:1) unbiased estimates of genetic variance components could be obtained by methods of MINQUE(1) for ADAA models and MINQUE(0/1) for seed models; if covariance between direct additive and maternal additive effects, and that between direct dominance and maternal dominance effects do not exist or are negligible, MINQUE(1) method can be employed for re-analyzing the reduced models to obtain unbiased results. 2) Three generations including parents, F_1 of single crosses and F_1 of three-way crosses were necessary for the analysis of ADAA models or seed models. The precision of the estimates and predictors improved with increase of number of generations and/or increase of the sample size. 3) Genetic effects could be predicted without bias by adjusted unbiased prediction (AUP) method for both ADAA models and seed models.