Anmylsis on Effect and Stability of the Regional Test of Populus × euramericana Clones

This paper analysed the interaction between genotype and environment for the 19 Populus × euramericana clones in a regional test.Their growth adaptability and genotypic stability have been evaluted by using 8 statistics. The regression coefficient(b)and deviation from regression meansquare(Sd2)of Eberhart-Russei model,the structural analysis parameters αi and λi of Tai model,the Ecovalence(W) of Wricke,the variarice of stability of Shulka and nonparametric measures of Nassar-Huhn wre used. The correlations among statistics of adaptability are highly significant and the correlations among statistics of stabilty are highly significant too. The correlation among statistics of adaptability and statistics of stability are negative correlation or unsignificant.Their application regions were predicted acccording to the statistics of adaptability and stability and the effect of G×E. A number of 10 super clones bave been selected.