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      Keragaman Karakter Biomassa dan Bioetanol Genotipe F3 Sorgum (Sorgum bicolor) Hasil Persilangan Bioguma 1 × Samurai 2

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      Date
      2025
      Author
      Sembiring, Michael Kaipo
      Trikoesoemaningtyas
      Wirnas, Desta
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      Abstract
      Sorgum (Sorghum bicolor L.) merupakan salah satu tanaman serealia yang mempunyai potensi besar untuk dikembangkan sebagai penghasil etanol. Sorgum memiliki kemampuan untuk bereproduksi di lahan marginal, toleran terhadap kekeringan, dan relatif tahan serangan hama dan penyakit. Penelitian ini bertujuan memperoleh informasi keragaman biomassa dan nira hasil persilangan varietas Bioguma 1 × Samurai 2. Penelitian dilaksanakan di Kebun IP2TP Muara Bogor, Kecamatan Bogor Barat, Kota Bogor, Jawa Barat pada bulan Mei hingga September 2024. Penelitian menggunakan rancangan Single Seed Descent (SSD) yang artinya setiap genotipe ditanam satu individu per lubang tanam. Varietas pembanding yang digunakan adalah Bioguma 1 dan Samurai 2. Jumlah genotipe uji terdiri dari 312 genotipe. Penelitian menunjukkan tidak ditemukan nilai tengah populasi yang lebih tinggi dibandingkan kedua tetuanya. Banyak karakter pada populasi F3 dipengaruhi oleh sedikit gen kecuali pada karakter bobot segar daun, bobot biji per malai, dan bobot seribu biji. Tidak ditemukan nilai heritabilitas arti luas berkategori sempit pada populasi F3. Nilai koefisien keragaman genetik bervariatif pada populasi F3 dengan kategori luas, sedang, dan sempit. Analisis korelasi menunjukkan adanya korelasi positif bobot dengan volume nira, tetapi negatif dengan nilai brix. Seleksi berdasarkan karakter bobot segar daun (BSD) berhasil dalam meningkatkan performa pada karakter yang diinginkan, walaupun terjadi penurunan pada salah satu karakter penting.
       
      Sorghum (Sorghum bicolor L.) is one of the cereal crops with great potential to be developed as a source of ethanol. Sorghum can grow in marginal lands, is tolerant to drought, and is relatively resistant to pests and diseases. This study aimed to obtain information on biomass and juice variability resulting from the crossing of the Bioguma 1 and Samurai 2 varieties. The research was conducted at the IP2TP Muara Experimental Field, Bogor Barat District, Bogor City, West Java, from May to September 2024. The study employed the Single Seed Descent (SSD) method, meaning each genotype was planted with one individual per planting hole. Bioguma 1 and Samurai 2 were used as parental controls. A total of 312 genotypes were evaluated. The results showed that no population mean exceeded those of both parents. Most traits in the F3 population were influenced by a small number of genes, except for fresh leaf weight, seed weight per panicle, and thousand-seed weight. No traits exhibited low broad-sense heritability in the F3 population. The genetic coefficient of variation among F3 populations varied from broad, moderate, to narrow categories. Correlation analysis revealed a positive correlation between biomass and juice volume, but a negative correlation with brix value. Selection based on fresh leaf weight successfully improved the desired traits, although a decrease in one important trait was observed.
       
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      http://repository.ipb.ac.id/handle/123456789/162542
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      • UT - Agronomy and Horticulture [7622]

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      Indonesia DSpace Group 
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