Hubungan Antara Karakter Vegetatif De Ngan Produksi Pati Sagu Baruq

Abstract

<p><span style="font-size: medium;">ABSTRAK</span></p><p><span style="font-size: medium;"> </span></p><p><span style="font-size: medium;">Sagu baruq merupakan tanaman sumber karbohidrat yang diambil dari batang. Masalah yang dihadapi adalah seleksi produksi pati pada </span><span style="font-size: medium;">setiap pohon. Banyak atau sedikitnya produksi pati akan diketahui setelah pohon ditebang. Tujuan penelitian ini adalah untuk mendapatkan informasi genetik plasma nutfah sagu baruq, terutama untuk mengetahui korelasi antara karakter-karakter vegetatif dengan produksi pati, yang dapat dimanfaatkan untuk kegiatan seleksi tetua. Salah satu alat yang bisa digunakan untuk mendapatkan informasi ini adalah metode sidik lintas. Karakter yang diamati adalah tinggi batang, jumlah daun, panjang rachis, panjang dan lebar petiol, panjang, lebar, dan jumlah anak daun, serta berat batang, empulur, dan pati. Pengumpulan data dilakukan dengan mengacu pada metode Pusat Penelitian dan Pengembangan Perkebunan tahun 2005. Data yang terkumpul dianalisis koefisien korelasinya untuk mengetahui hubungan langsung dan tidak langsung karakter-karakter vegetatif dengan berat tepung sebagai komponen hasil. Perhitungan koefisien lintas mengacu pada metode matriks oleh Singh dan Chaudari. Hasil yang diperoleh menunjukkan terdapat enam karakter yang berpengaruh langsung terhadap berat tepung dan dapat dijadikan seleksi peningkatan </span><span style="font-size: medium;">produksi pati sagu baruq di Tabukan Tengah. Sementara itu, di Manganitu, <br /> </span><span style="font-size: medium;">terdapat sembilan karakter yang dapat dijadikan sebagai kriteria seleksi untuk perbaikan tanaman. Selain pengaruh langsung, dihasilkan juga 12 pengaruh tidak langsung yang dapat dipertimbangkan sebagai kriteria seleksi populasi sagu baruq di Tabukan Tengah dan 10 pengaruh tidak langsung untuk Manganitu.</span></p><p><span style="font-size: medium;">Kata kunci: Arenga macrocarpha, hubungan, karakter vegetatif, produksi pati</span></p><p><span style="font-size: medium;"> </span></p><p><span style="font-size: medium;"> </span></p><p> </p><p><span style="font-size: medium;">Relationship Between Vegetative Characters an d SagoBaruq Starch Production From Sangihe District </span></p><p><span style="font-size: medium;"><br /></span></p><p><span style="font-size: medium;">ABSTRACT</span></p><p><span style="font-size: medium;"> </span></p><p><span style="font-size: medium;">Baruq sagu is an important source of carbohydrate from the stem, constrain in cultivation was difficulty in selecting high yield plants. The experiment was conducted at the District Tabukan Tengah and Manganitu Sangihe Regency, North Sulawesi in May 2012. The purpose of this study was to obtain genetic information for germplasm of sago Baruq, especially to determine the correlation between vegetative characters and the production of starch, which later can be used as the selection of mother palms. One of the tools that can be used to obtain this information was the method of path analysis. Research methods used was direct observation in the field. The number of plants observed for each site 1 0 trees, which were randomly selected. Characters observed were plant height, number of leaves, rachis length, length of petiol, petiol width, length of the leaf, width of leaf, number of leaves, stems weight, pith weight, and weight of starch. The collected data were analyzed to determine the direct and indirect relationship between vegetative characters and weight of starch using path analysis. The result showed that 10 vegetative characters of Baruq sago population in Tabukan Tengah District, Sangihe regency produced six characters directly influence the character of the starch weight and can be used as selection criteria to increasing production of baruq sago starch. Meanwhile, in District Manganitu 9 characters can be used as selection criteria for crop improvement. In addition to the direct effects, 12 indirect effects can be considered as a selection criteria for sago baruq population in District Tabukan Tengah and 10 indirect effects for the population baruq sago in the District Manganitu.</span></p><p><span style="font-size: medium;"> </span></p>Keywords: Arenga macrocarpha , relationships, vegetative character, starch production

Proteome Landscape during Ripening of Solid Endosperm from Two Different Coconut Cultivars Reveals Contrasting Carbohydrate and Fatty Acid Metabolic Pathway Modulation

“…According to the previous findings, it is necessary to further understand the metabolic pathways of carbohydrates and lipids of oilseeds such as coconut, since there may be differences among the plant families regarding the regulation of these metabolic pathways [15]. In the case of the coconut tree, Maskromo et al [66] and Tenda et al [11] described significant differences in the fatty acid content of tall and dwarf varieties, which allows us to hypothesize that there is a correlation between the fatty acid content and the accumulation of proteins related to that metabolism.…”

“…The solid endosperm, also called "coconut meat", and when dry, "copra", is a source of oil composed of triacylglycerol (TAG) with long-, medium-and short-chain fatty acids. In the solid endosperm, medium-chain saturated fatty acids (MCSFA) predominate, e.g., lauric acid (C12:0), myristic acid (C14:0) and palmitic acid (C16:0), among others, and the total fatty acid content is higher in the tall than in the dwarf variety [10,11]. Coconut oil contains high levels of lauric acid and exhibits characteristics such as increased oxidative stability, low melting points and stable emulsion formation, all highly appreciated in the food and chemical industries [12,13].…”

The growth character of sago palm based on differences in time of trunk formation

“…While the number of leaves is other growth characteristics that generally affect the formation of trunk diameter. The number of leaves is the most likely marker to be used as a selection marker [12]. The increased number of leaves makes the leaf area larger as a place for photosynthesis to take place to produce photosynthetic substrates for plant growth [5].…”

“…At the same time,another growth characteristic that shows a significant total effect on the formation of trunk diameter is the number of leaves. The number of leaves is the most potential character used as a selection character [12]. An increase in the number of leaves occurs to produce a larger leaf area for photosynthesis to produce photosynthetic substrates for plant growth [5].As per researchofYamamoto (2014), the rachis is the central structure of a leaf that is responsible for placing the leaflets to capture as much light as possible [13].Tree height also has an important meaning in assessing sago crop yields [5].…”