Influence of Sample Numbers of Offspring Tested on Genetic Analysis of Quantitative Traits

Chosing the 9×9 half diallel cross of Chinese fir plantation at the age 7 as research material,partial data with 8,16,24,32 block repeats randomly were sampled from total data(40 block repeats),respectively.Variance analysis and combining ability analysis were carried out.From the viewpoint of both random model and fixed model,we investigate,in an all-round way and in a systematic way,that offspring sample numbers tested influence on genetic analysis of quantitative traits.The results show that there is a significant effect of sample numbers of offspring tested on genetic analysis,and it varied with research traits.This conclusion tells us in progeny testing and in statistic analysis,each treatment must have a suitable sample numbers of offspring tested,and so,the results of experimental design and statistic analysis are correct and reliable.