SUMMARY
AbstrakPengujian stabilitas genotip merupakan hal yang penting dalam perakitan varietas padi gogo. Metode pengujian yang sering dilakukan menggunakan analisis ANOVA gabungan yang harus memenuhi normalitas data dan homogenitas ragam. Terkadang data yang diperoleh tidak dapat memenuhi asumsi, sehingga diperlukan analisis alternatif menggunakan metode kualitatif, yaitu Additive Main Effect and Main Interaction (AMMI). Penelitian menggunakan empat belas genotip padi gogo pada tujuh lokasi, dengan rancangan percobaan rancangan acak kelompok. Hasil analisis AMMI1 menunjukkan bahwa didapatkan tujuh genotip dengan nilai rerata produksi di atas rata-rata umum yaitu G29, G31, G33, G34, G35, G37, dan G42 (Inpago 9). Inpago 9 sebagai genotip dengan rata-rata produksi tertinggi di seluruh lokasi. Hasil analisis AMMI2 didapatkan genotip dengan kemampuan adaptasi spesifik lokasi dan beradaptasi pada seluruh lokasi. Dua genotip beradaptasi baik di lokasi Probolinggo yaitu G39 dan G40, sedangkan G29 dan G41 di lokasi Sukadana. Sementara genotip stabil didapatkan tiga genotip yaitu G31, G34, dan G36, namun genotip G36 termasuk genotip dengan produktivitas dibawah rerata genotip pada seluruh lokasi.AbstractGenotype stability is an important factor for varieties development in upland rice. The method for testing stability trial using combine ANOVA with several requirements such as the normality and homogeneity of variance of the data. Sometime to satisfy the assumptions from the acquiring data was not match, so that needed the alternate analysis using qualitative method for stability genotype testing. One of the method is Additive Main Effect and Main Interaction (AMMI). The research was used fourteen upland genotype and seven locations. The result for AMMI1 showed that seven genotype which is have average above the general average are G29, G31, G33, G34, G35, G37, and G42 (Inpago 9). The highest production is achieving by Inpago 9 varieties. While in AMMI2 have two different result. The first result is genotype with specific adaptation and genotype with has general adaptability. Genotype with specific adaptation are G39 and G40 in Probolinggo while G29 and G41 in Sukadana. The second result was genotype with general adaptability or have a good stability are G31, G34, and G36, but for genotype G36 has a poor productivity because the average is below the general average. The result from stability analysis in AMMI2 biplot showed the stability of G31 and G34 has a good stability and higher yield above the average of genotype in all location.