Abstract
Papua is known to have high genetic diversity of sweet potatoes. This study aims to obtain information on the performance of yield components and genotype diversity of local Papuan sweet potatoes. This research was carried out for ± 5 months, from March to August 2021 located at the Mangoapi Experimental Field, University of Papua. The study used a randomized block design (RBD) with 4 Papuan sweet potato genotypes namely, Bovendigoel-1, Bovendigoel-2, Bovendigoel-3 and Bovendigoel-4. The research variables were tuber diameter, tuber length, tuber number per plant, tuber weight per plant, tuber weight per mound, tuber weight per mound, economic tuber number, economic tuber weight, sugar content (ºbrix) and starch content (specific gravity). Data analysis includes Variety Analysis, Principal Component Analysis, Cluster Analysis and Correlation Coefficient. The results showed that the character of the tuber diameter, the Bovendigoel-3 genotype was greater than the Bovendigoel-2 genotype, the length of the tuber, the Bovendigoel-2 genotype was greater than the Bovendigoel-1, the number of tubers per plant, the Bovendigoel-1 genotype was greater than the Bovendigoel-1 genotype. Gonotype Bovendigoel-2, the character of tuber weight per plant, gonotype Bovendigoel-4 is greater than gonotype Bovendigoel-2, character of the number of economic tubers, genotype Bovendigoel-3 is greater than gonotype Bovendigoel-1, character of economic tuber weight, gonotype Bovendigoel-3 higher than the Bovendigoel-1 gonotype, the character of the number of tubers per mound, the Bovendigoel-1 gonotype was greater than the Bovendigoel-2 gonotype, the character of the weight of the tubers per mound, the Bovendigoel-3 gonotype was greater than the Bovendigoel-2 gonotype, mound and sugar content character ( brix), the Bovendigoel-3 gonotype was larger than the Bovendigoel-1 gonotype. There is a variation in the production capacity of the 4 local Papuan sweet potato genotypes with a similarity coefficient of 0.17-0.62, there are two main components with a cumulative variation of 94,66%, and a positive correlation of economic tuber weight to yield.
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