Taro have been cultivated and consumed as a food supplement in Indonesia. Beside it used as a food, it is also as source of industrial purposes, such as a part of raw material of cosmetic or plastic. Characteristic of tuber (corm) of taro determine their usage. Utilization of germplasm collection of taro could be done more intensively by studying their morphological characters. Experiment was conducted in 2005 consisted of 170 accessions of taro. Morphological characters of tuber have been observed at harvest time. Result of the study show that variability of morphological characters were exist within areas or among areas. There are several interesting varieties which have long umbi or high tuber yield and specific tuber flesh color.Key words: Colocasia esculenta, corm, germplasm. ABSTRAKTanaman talas telah lama dibudidayakan dan dimanfaatkan sebagai sumber pangan tambahan di Indonesia. Di samping sebagai sumber pangan, talas juga dapat dimanfaatkan untuk keperluan industri, misalnya sebagai bahan baku kosmetik dan plastik. Karateristik umbi talas menentukan penggunaannya. Pemanfaatan talas dapat ditingkatkan dengan mempelajari sifat-sifat morfologi yang dimiliki plasma nutfah yang telah dikoleksi. Percobaan dilaksanakan pada tahun 2005 terdiri atas 170 aksesi plasma nutfah talas. Karakter morfologi umbi diamati setelah panen. Hasil penelitian menunjukkan bahwa terdapat keragaman karakter morfologi dalam daerah atau antar daerah asal plasma nutfah. Dari koleksi plasma nutfah yang telah dimiliki diperoleh aksesi yang menarik seperti umbi talas yang panjang dengan warna daging umbi yang khas.Kata kunci: Colocasia esculenta, umbi, plasma nutfah.
<p>Clustering of the 65 accessions of wheat have been done based on the quantitave plant characters. The purpose of this study was to identify genetic resources of wheat for breeding programs. Result of the analysis showed that there are 6 clusters. Two of those clusters have short maturiy and high yielding potential. Cluster of accessions having which is short maturity and moderately short plant, 1.000 seeds weight, maximum number of tiller, number of productive tiller, panicle length, exertion length have 12 accessions. While cluster with high potential production, shot panicle and moderate quantitative characters consists of 13 accessions. Therefore, those two clusters could be used as genetic resources for short maturiy and high yield characters of wheat.</p><p> </p><p><strong>Abstrak</strong></p><p>Telah dilakukan pengelompokan 65 aksesi plasma nutfah gandum berdasarkan karakter kuantitatif. Ini dimaksudkan untuk mengidentifikasi sumber gen untuk perakitan varietas unggul gandum. Hasil analisis gerombol dengan menggunakan peubah kuantitatif diperoleh 6 kelompok aksesi. Dua kelompok di antaranya memiliki karakteristik umur panen cepat dan potensi hasil tinggi. Kelompok aksesi yang memiliki umur panen cepat dan tinggi tanaman pendek, berat 1.000 butir, jumlah anakan maksimum, jumlah anakan produktif, panjang malai dan panjang tangkai malai rata-ratanya sedang terdapat 12 aksesi. Kelompok aksesi yang memiliki potensi hasil tinggi dengan malai pendek serta sifat kuantitatif lainnya sedang terdapat 13 aksesi. Oleh karena itu, untuk kedua kelompok tersebut dapat dijadikan sebagai sumber gen tanaman gandum berumur pendek dan berpotensi hasil tinggi.</p>
Sorghum had been cultivated by farmers in certain area for a long time. It is used for food or feed and its production was relatively low. Germplasm collection have to be evaluated to obtain certain character which were important to plant breeding. The purpose of this study was to evaluate ratooning ability of sorghum. Research was conducted in Cikeumeuh Experiment Station, Bogor from April-December 1999 using randomized complete block design. There were three type of maturity were studied (21 accessions, 44 accessions and 35 accessions for short, medium and long maturity, respectively). Result showed that main crop was better than ratoon crops. Grain yield of accession No. 15/226 classified as short maturity in ratoon crop, was better than main crop, but total grain yield (main and ratoon crop) was not significantly different compare to Keris M3 and ICSV 93003.Key words: Sorghum, ratoon, germplasm. ABSTRAKTanaman sorgum telah lama dibudidayakan petani di daerah tertentu. Sorgum dapat digunakan sebagai pangan atau pakan dan umumnya memiliki produksi relatif rendah. Koleksi plasma nutfah perlu dievaluasi untuk mendapatkan karakter tertentu yang penting untuk pemuliaan tanaman. Tujuan dari penelitian ini adalah untuk mengevaluasi kemampuan ratoon dari plasma nutfah sorgum. Penelitian dilaksanakan di Instalasi Percobaan Cikeumeuh Bogor yang berlangsung pada AprilDesember 1999 dengan menggunakan rancangan acak kelompok. Umur masak tanaman sorgum yang dipelajari terdiri dari 3 kelompok umur panen (21 aksesi umur pendek, 44 aksesi umur sedang, dan 35 aksesi umur panjang). Hasil penelitian menunjukkan bahwa tanaman utama lebih baik daripada tanaman ratoon. Bobot biji aksesi No. 15/226 lebih baik daripada tanaman utama, tetapi total bobot biji tanaman utama dan ratoon tidak berbeda nyata apabila dibandingkan dengan aksesi Keris-M3 dan ICSV 93003.Kata kunci: Sorgum, ratoon, plasma nutfah. PENDAHULUANTanaman sorgum telah lama dibudidayakan di Indonesia, namun dalam areal yang masih terbatas. Pertanaman sorgum banyak dijumpai di daerahdaerah yang memiliki curah hujan sedikit seperti di Demak dan Pati Jawa Tengah dan Bojonegoro Jawa Timur (Roesmarkam 1981). Pada umumnya tanaman ini ditumpangsari dengan padi gogo, kedelai atau tanaman palawija lainnya.Sorgum merupakan salah satu tanaman penting sebagai bahan baku pakan ternak. Produksi sorgum perlu ditingkatkan untuk memenuhi kebutuhan pangan atau pakan (Singgih dan Hamdani 1998). Biji sorgum memiliki kualitas nutrisi yang sebanding dengan biji-bijian lainnya. Sebagai perbandingan, biji sorgum mempunyai kandungan nutrisi yang hampir sama dengan biji jagung, sehingga dapat menggantikan jagung yang sewaktu-waktu sulit dicari di pasaran. Pembudidayaan tanaman sorgum relatif lebih mudah, tidak memerlukan tanah yang subur, dan relatif toleran kekeringan. Biji sorgum mengandung 9,8% protein dan 2,3% lemak sedangkan biji jagung mengandung 9,4% protein dan 4,2% lemak (Ismail dan Kodir 1977). Oleh karena itu, sorgum layak dipertimbangkan sebagai sumber pangan dan pakan. Tepun...
Multiplication of Propagated Tuber and Adaptability Test of Arrowroot Germplasm. Increasing arrowroot production needs technology production and variety suitable to the plant environment. Production constraints for arrowroot are seedling (stolon and tuber) limitation of cultivars adapted to the production area. Experiment had been carried out by using two factors (seedling source and variety) planted under randomized complete block design, three replications to study their germination capability. Three parts of seedlings source (tip, middle and basal part of tuber, 2 buds each) as first factor, and 10 varieties as second factor. Effect of seedling (stolon and tuber) of arrowroot and variety (10 accessions) were tested to study their adaptability had been done in 3 locations (Bogor, Cianjur and Serang). Seedling were planted at 50 cm x 40 cm, one row for each treatment. Tip-part and base-part of tuber showed better germination than middle-part of arrowroot tuber. There were effect of genotypic and environment interaction to tuber and starch yield. Accession No. 27
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