Fresh Tuber Yield Stability Analysis of Fifteen Cassava Genotypes Across Five Environments in East Java (Indonesia) Using GGE Biplot

The research aimed is to determine the yield stability of 15 cassava genotypes using GGE biplot. The study was conducted at five locations starting in November 2010 to August 2011.The results showed that environment, genotype, and genotype-by- environment interactions significantly affect the yield. Environment gives the most effect (64.69%), followed by genotype-by- environment interaction effect (6.53%), and genotype effect (4.94%). CMM 03038-7 has the highest yield among other clones, and higher than the controls clones (UJ5, Malang 6, and Adira 4), but not significantly different from Malang 4. GGE biplot identified that CMM 03038-7 is the most stable clones with high yield.