Preliminary Analysis on the Stability of Yield and Yield Components of Barley Varieties(line)Breeded in Fujian

The stabilities of yield and its components of six barbeys varieties(line)breeded in Fujian were determined in two years.The results are as follows,(1)with the imorovement of effective ears,ear grains and 1000-grain weight,the yield of new breeded line increased by 9.2%～16.6%as compared with CK(Pudamai 4),but the performance of these characters in experimental sites was different,and the remarkable interaction was found between the varieties and the experimental sites(2)Minmai 06 showed high and stable yields and its yield components were stable and coordi-nate.Pumai 50 showed some high but unstable yields mainly due to unstable ear number.The yield and its stability of Pumai 93,Minyou 3 and Quan 1418 were better than CK,and their yield cornpo-nents were relatively stable except for the unstable ear grains of Quan 1418.The CK showed un-stable vields and its yield component stability was confused(3)No correlation was found of the mean values of yield and yield components with the parameters of their stabilities(Nand the varia-tion coefficients(c,v)of the characters,but the values of band C.V showed remarhHecorrela-tions.The stability parameters of yield and yield components showed no remarkable correlations.