Browsing by Author "Sutoro"

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    Manajemen Benih Plasma Nutfah Tanaman Pangan
    (BB Biogen, 2005) Sutoro; Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumberdaya Genetik Pertanian
    Konservasi plasma nutfah tanaman berbiji dapat dilakukan secara ex situ dengan cara menyimpan benih dalam ruang dingin. Dalam rangka menjaga kelestarian plasma nutfah yang disimpan maka perlu dilakukan monitoring viabilitas benih secara periodik. Masalah yang dihadapi dalam penyimpanan benih dalam ruangan dingin, yaitu fasilitas listrik sering tidak kontinu sehingga akan mengganggu suhu dan kelembaban yang dapat mempengaruhi viabilitas benih yang disimpan. Berdasarkan informasi viabilitas benih dari hasil monitoring tersebut maka dapat ditentukan aksesi-aksesi plasma nutfah yang perlu segera direjuvenasi kembali. Kegiatan uji daya tumbuh dilaksanakan di Laboratorium Bank Gen dan Genetika Tanaman BB-Biogen Bogor. Sistem database manajemen benih disusun dengan menggunakan software Microsoft-ACCESS. Hasil pengamatan daya tumbuh benih plasma nutfah dari hasil panen tampaknya banyak yang tidak memenuhi persyaratan untuk disimpan sebagai konservasi ex situ. Oleh karena itu, perlu segera direjuvenasi lagi. Selain faktor tempat penyimpanan benih, faktor penanganan prosesing perlu mendapat perhatian yang lebih intensif. Monitoring benih plasma nutfah perlu dilakukan secara terus menerus agar koleksi benih dapat dipertahankan dan dapat dilestarikan.
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    Metode Kuantifikasi Peubah Biometrik Tanaman Pangan
    (Balai Penelitian Bioteknologi Tanaman Pangan, 1997) Sutoro; Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumberdaya Genetik Pertanian
    Quantification Methods of Biometrical Plants Characters. Sutoro. Observation on characters consume much time and cost, especially in the research involving many unit of experiments. Therefore, quantification of plant characters method reducing time and cost necessary to be studied. Leaf area of corn at the flowering stage under optimum condition could be estimated by Y = 4.1844 (PxL)6 for plant with 8 leaves, Y = 5.0390 (PxL)5 for plant with 9 leaves, Y = 5.4416 (PxL)6 for plant with 10 leaves, Y = 6.3911 (PxL)7 for plant with 11 leaves, Y = 6.7134 (PxL)7 for plant with 12 leaves, Y = 6.7892 (PxL)e for plant with 13 leaves, Y = 7.1198 (PxL)9 for plant with 14 leaves, Y = 7.7282 (PxL)9 for plant with 15 leaves, (PxL), = leaf length x width at i-position (flag leaf = first position). Leaf area estimation on cassava by using Y = 0.8077 (PxLxn)08946 where PxLxn = product of maximum leaf length, width and number of lobe. Estimation of leaf area on sweet potato Y = 0.8 (PxL) for heart type's leaf, P = leaf length and L = maximum width, while star type's leaf by using Y = 0.47(PxL)11 P = leaf length and L = leaf width at the middle part. Leaf area estimation of soybean is Y = 2.1368 (PxL)09737 PxL = leaf length x maximum width of terminal leaf of trifoliate. Leaf area of mungbean is Y = 2.0235 (PxL)0'9 , PxL = leaf length x width of terminal leaf. Leaf area of peanut could be estimated by using leaf length (P) and maximum width (L) of left or right side on lower part of tetrafoliate by using formula Y = 4.1553 (PxL)094. Missing hills on soybean up to 15% under optimum condition doesn't effect to the grain yield. Corn plant which existing more than 5% of missing hills will effect to the grain yield. Image analysis could be used to quantified of morphological plant characters accurately.
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    Perencanaan Penelitian dan Analisis Data
    (Balitbangtan, 2017-11-20) Sutoro; Sumarno; Editor, Haris Syahbuddin; Balitbangtan