Putri et al. : Deteksi Kemunduran Benih Kedelai (Glycine max L.) 329 Jurnal Agrotek Tropika, Mei 2021, Vol 9, No. 2, pp. 329 - 336 DOI : http://dx.doi.org/10.23960/jat.v9i2.5014 ISSN: 2337-4993 (Print), 2620-3138 (Online) DETEKSI KEMUNDURAN BENIH KEDELAI (Glycine max L.) DENGAN METODE PENGUSANGAN CEPAT (Accelerated Aging Test) KIMIAWI SEED DETERIORATION DETECTION OF SOYBEAN (Glycine max L.) WITH CHEMICAL ACCELERATED AGING TEST Ria Putri 1* , Ari Wahyuni 1 , Riana Jumawati 2 1 Program Studi Teknologi Perbenihan, Jurusan Budidaya Tanaman Pangan, Politeknik Negeri Lampung, Indonesia 2 Program Studi Hortikultura, Jurusan Budidaya Tanaman Pangan, Politeknik Negeri Lampung, Indonesia *Email: riaputri@polinela.ac.id * Corresponding Author, Diterima: 28 Des 2020, Direvisi: 11 Feb. 2021, Disetujui: 29 Apr. 2021 ABSTRACT The deterioration of seeds occurs due to a decrease in the physiological quality of the seeds during the storage period. This study aimed to determine the effect of the intensity of chemical accelerated aging on the viability and vigor of two soybean varieties. This research was conducted from January to April 2021 in the seed analysis laboratory and greenhouse of Seed Technology Study Program, Lampung State Poly- technic. This study used a completely randomized design with two factors and four replications. The first factor was the soybean variety which consists of two levels, namely Dega (V 1 ) and Deja (V 2 ). The second factor was accelerated aging (the immersion time of 20% ethanol) which consists of five levels, namely 0 minutes (T 0 ), 15 minutes (T 1 ), 30 minutes (T 2 ), 45 minutes (T 3 ), and 60 minutes (T 4 ). The results of this study indicated that (1) the intensity of the 0 to 60 minute accelerated aging decreased the viability as indicated by the decrease in the percentage of field emergence (2) the viability and vigor of Deja is higher than Dega based on the percentage of field emergence, the number of leaves, primary root length and rate of assimilation of soybean, and (3) Deja had higher resistance to 20% ethanol compared to Dega as indicated by the Deja seeds still growth at 60 minutes of accelerated aging. Keywords: Accelerated aging test, seed deterioration, seed viability, soybean. ABSTRAK Kemunduran benih terjadi karena penurunan mutu fisiologi benih selama periode simpan. Penelitian ini bertujuan untuk mengetahui pengaruh intensitas pengusangan cepat kimiawi pada viabilitas dan vigor benih dua varietas kedelai. Penelitian ini dilaksanakan dari bulan Januari sampai April 2021 di laboratorium analisis benih dan greenhouse Program Studi Teknologi Perbenihan, Politeknik Negeri Lampung. Penelitian menggunakan Rancangan Acak Lengkap (RAK) dengan dua faktor dan empat ulangan. Faktor pertama adalah varietas kedelai yang terdiri atas dua taraf yaitu varietas Dega (V 1 ) dan varietas Deja (V 2 ). Faktor kedua adalah waktu pengusangan (perendaman cairan etanol 20%) yang terdiri atas lima taraf yaitu 0 menit (T 0 ), 15 menit (T 1 ), 30 menit (T 2 ), 45 menit (T 3 ), dan 60 menit (T 4 ). Hasil penelitian dapat disimpulkan bahwa (1) intensitas waktu pengusangan 0-60 menit menurunkaan viabilitas yang ditunjukkan dengan menurunnya persentase daya tumbuh benih (2) viabilitas dan vigor benih varietas Deja lebih tinggi dibandingkan dengan varietas Dega pada peubah persentase daya tumbuh, jumlah daun, panjang akar primer dan laju asimilasi kecambah kedelai, dan (3) varietas Deja memiliki