ISHS Acta Horticulturae 670: I International Symposium on Root and Tuber Crops: Food Down Under
ADAPTATION AND YIELD STABILITY OF SWEETPOTATO CLONES FOR HUMAN AND PIG FOOD IN MOUNTAINOUS AREAS OF JAYAWIJAYA, IRIAN JAYA, INDONESIA |
| Authors: | M. Jusuf Yakub, D. Peters |
| Keywords: | Ipomoea batatas, fiber, starch, protein, trypsin |
| Abstract:
Sweetpotato is cultivated extensively in the highlands of Irian Jaya between 1200 and 2700 m a.s.l., where it is generally the staple food. In Irian Jaya sweetpotato is an important subsistence crop, both for humans and for pigs. It is estimated that 60% of the population consume sweetpotato as their staple food, while in the mountainous areas sweetpotato accounts for about 90% of the diet for the Dani (an Irian Jaya tribe). Literature records there has been less emphasis on sweetpotato selection for human and pig food at high elevations (above 1800 m a.s.l) compared to selection at lower elevations and for other areas of utilization. Selection of advanced sweetpotato cultivars for human food will provide higher yields and improved nutrition (vitamin A and starch). Varieties selected for pig feed will provide increased starch and protein levels. The adaptation of sweetpotato clones for human and pig food were evaluated in Jayawijaya Regency, Irian Jaya. Three clones were then selected for further multi-location trials based on human food selection criteria , namely clones BB 97089-12, BB 97256-9 and MSU 99051-1 with dry matter yields of 5.47, 6.54 and 4.82 t/ha respectively. For pig feed, ‘Musan’ produced the highest fresh root yield but the dry matter yield of three clones, MSU 63-3 (5.44 t/ha), BB 97256-9a (5.29 t/ha) and BB96018-3 (5.71 t/ha) were comparable. | |
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