This paper presents a detailed review of the literature on researches of the inheritance of economic traits in silkworm,outlines the advances of application of quantitative genetics for the conventional study of quantitative traits of silkworm and analysis of its varietal stability,inheritance of stress resistance,feed efficiency and QTLs.
The regional test data of spring maize in north China in 1994～1995 were analyzed with cultivar stability parameter and high stable coefficient method and the accuracy of stability parameter of several cultivars was also analyzed. The results showed that the regression coefficient between cultivars can reflect the stability differences of cultivars accurately and the representativeness of its stability is accurater than other stability parameter;
The indica hybrid Shanyou 63 showed the best cultivar stability in all the six appearance qualities, while the conventional cultivars 93272,Nanjing 16, W002 and Suxiangjing 2 exhibited lower RC and SC and higher cultivar stabilities in the two traits. The cultivars with high appearance qualities and stability could be used in elite rice breeding.