Potensi Hasil Aksesi Plasma Nutfah Ubi Jalar Di Dataran Tinggi

Sweet potato germplasm that have been collected from Sulawesi, East Nusa Tenggara, Bali, West Nusa Tenggara, and other areas are needed to be characterized and evaluated to determine their identity, their conservation management strategies and their potential for utilization. One of the important parameters is the yield potential. Objective of the evaluation of sweet potato germplasms were to clusterize accessions based on the potential productivity at harvest time 8, 9, and 10 months after planting. A total of 533 germplasm accessions of sweet potato were planted 10 plants/accessions, with a spacing of 25 cm × 100 cm and planted one clone/plant. Dose of fertilizers used were 60 kg NO3, 35 kg P2O5, and 75 kg K2O/ha, which 1/3 dose of N, P, and K were given at the time of planting, 2/3 dose of N and K applied at one month after planting. Clustering method used 75% similarity. The results of this evaluation showed that 134 accessions on 8 month after planting were divided into four clusters, each cluster consisted of 130, 2, 1, and 1 accessions. Five accessions of cluster 2 and 3 had yield potency of tuber as much as 2433−3767 g/plant. At 9 month after planting, clustering of 179 accessions also produced 4 clusters, each cluster consisted of 36, 9, 2, and 132 accecions. Fourty eight accessions of cluster 2 and 3 had yield potency of tuber as much as 1468−2333 g/plant. At 10 months after planting, clustering of 50 accessions produced 6 clusters. Thirty five accession of cluster 3 and 5 had yield potency as much as 1211−1416 g/plant. The results of this evaluation also showed 37 accession had not rooted yet at 12 months after planting