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      Periode Dormansi Selama Penyimpanan dan Metode Pematahan Dormansi Benih Bayam (Amaranthus spp.).

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      Date
      2024
      Author
      Khotimah, Dian Nur
      Marwiyah, Siti
      Palupi, Endah Retno
      Haq, Nasrul
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      Abstract
      Benih bayam yang baru dipanen memiliki dormansi after-ripening sehingga tidak dapat segera digunakan sebagai bahan tanam. Penelitian bertujuan mendapatkan informasi persistensi dormansi benih bayam varietas BY-04 yang disimpan dalam kondisi simpan yang berbeda dan mendapatkan metode pematahan dormansi yang efektif. Penelitian dilakukan menggunakan dua lot benih (K6/21633 dan L-1) yang dilakukan sebagai dua percobaan berbeda. Rancangan penelitian yang digunakan adalah rancangan acak lengkap petak tersarang dengan faktor percobaan pertama adalah kondisi simpan, terdiri atas kondisi simpan AC (15,9– 9,5 ℃, RH 44–64%) dan kondisi simpan kamar (26,3–29,5℃, RH 62–79%) dengan penyimpanan selama 24 MSS. Faktor kedua berupa perendaman zat pengatur tumbuh selama 24 jam sebelum pengecambahan menggunakan larutan GA3 200 ppm, GA3 400 ppm, KNO3 2000 ppm, KNO3 4000 ppm, dan benih tanpa perlakuan (kontrol). Hasil penelitian menunjukkan bahwa Interaksi antara kondisi simpan dan perlakuan pematahan dormansi tidak menunjukkan hasil yang konsisten. Kondisi simpan kamar (26,3–29,5℃ dan RH 62–79%) menginisiasi pematahan dormansi lebih cepat pada 10 MSP dibandingkan kondisi simpan AC (15,9–19,5℃ dan RH 44–64%) pada 12 MSP. Perlakuan pematahan dormansi dengan GA3 dan KNO3 menunjukkan hasil yang setara, namun KNO3 lebih direkomendasikan. Struktur internal benih yang tidak lengkap menjadi penyebab tingginya jumlah benih segar tidak tumbuh dalam penelitian.
       
      The newly harvested Amaranth seeds exhibit after-ripening dormancy, preventing immediate use as planting material. This research aims to obtain information on the persistence of dormancy in spinach seeds of BY-04 variety stored under different conditions and to identify an effective method for breaking dormancy. The study utilized two seed lots (K-6/21633 and L-1) treated as separate experiments. A randomized complete block design with nested factors was employed, where the first factor was the storage condition, including airconditioned storage (15.9–19.5 ℃; RH 44–64%) and room temperature storage (26.3–29.5 ℃; RH 62–79%) for 24 days of after-ripening. The second-factor involved seed soaking with plant growth regulators for 24 hours before germination, using GA3 solutions at 200 ppm and 400 ppm, KNO3 solutions at 2000 ppm and 4000 ppm, and untreated seeds (control). The research indicates that the interaction between storage conditions and dormancy-breaking treatments shows inconsistent outcomes. The storage conditions (26.3–29.5℃ and RH 62–79%) initiate dormancy breakage earlier at 10 weeks post-harvest compared to the AC storage conditions (15.9–19.5℃ and RH 44–64%) at 12 weeks post-harvest. Dormancy-breaking treatments using GA3 and KNO3 show comparable results, although KNO3 is more recommended. The incomplete internal seed structure is identified as the cause of the high number of seeds failing to germinate in the study
       
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      http://repository.ipb.ac.id/handle/123456789/148010
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      • UT - Agronomy and Horticulture [7622]

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      Indonesia DSpace Group 
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