Yielding Ability and Stability of Soybean Lines in Guizhou Regional Test

The yielding ability and stability of four tested soybean lines in Guizhou regional tests in 2009 and 2010 were analyzed by the variation coefficient method and high stability coefficient method to provide the scientific basis for approval and application of these lines.The results showed that Qiandou 08002 and Qiandou 08003 lines were of strong environmental adaptability,yielding ability and stability.Qiandou 08001 line with yielding ability and instability could get high yield under the suitable environmental condition.The yielding ability and stability of An 06158 line were poor.Qiandou 08002 and Qiandou 08003 lines with yielding ability,good stability and wide adaptability should be planted in production and demonstration tests.