Respon Karakter Fisiologis Kedelai (Glycine max L.) Verietas Grobogan terhadap Cekaman Genangan

Vita Siti Fatimah, Triono Bagus Saputro
Submission Date: 2016-08-05 12:31:06
Accepted Date: 2016-11-23 18:14:56

Abstract


Kedelai (Glycine max L.) mempunyai arti penting untuk memenuhi kebutuhan pangan dalam rangka perbaikan gizi masyarakat, karena  kandungan nutrisinya yang banyak dan merupakan sumber protein nabati yang ekonomis. Kendala dalam produksi kedelai adalah faktor lingkungan, salah satunya adalah curah hujan. Curah hujan dapat mengakibatkan genangan (waterlogging). Tujuan dari penelitian ini adalah mengetahui respon karakter fisiologis kedelai varietas Grobogan dan toleransinya terhadap genangan. Penelitian cekaman genangan dilakukan pada stadia vegetatif dengan taraf genangan 100%, 150%, 200% dan kontrol sebagai pembanding. Berdasarkan data didapatkan hasil bahwa nitrogen daun tertinggi terdapat pada perlakuan kontrol dengan 2,45% dan menurun seiring dengan peningkatan taraf genangan. Kadar klorofil, berat basah dan berat kering juga mengalami penurunan. Penurunan berat kering mencapai 60,41%. Tanaman kontrol dan perlakuan genangan mengalami perbedaan dalam alokasi fotosintat. Perlakuan genangan lebih tinggi rasio akarnya dibandingkan dengan tajuk, sebaliknya pada perlakuan genangan rasio tajuk lebih tinggi dibandingkan dengan akar. Konsentrasi etilen akar  mengalami peningkatan pada konsentrasi genangan 200% yaitu mencapai 14,878 ppm

Keywords


etilen; fisiologis; genangan; Grobogan; kedelai (Glycine max).

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