Present Condition of Sago palm Forest and Its Starch Productivity in East Sepik Province, Papua New Guinea. 2. Varieties of sago palm and their distribution.:2. Varieties of sago palm and their distribution
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概要
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There was a large difference in starch productivity between the planted high-yielding varieties of sago palm (local name "sak sak tru") and the wild varieties ("wel sak sak") . The inhabitants in this area have identified 9 superior varieties and 4 wild varieties based mainly in morphological differences, including 1) thorns-presence or lack, their length and patterns of arrangement 2) color or color band of petiole, leaf sheath, rachis and leaflet, 3) extent of leaf bending 4) trunk length and circumference. It was observed that the occurrence and length of thorns showed continuous variations among the varieties, as a result <I>Metroxylon sagus</I> ROTTB. and <I>Metroxylon rumphii</I> MART. were considered to be the same species. Density of sago clumps in high-yielding sago forest was about 40m<SUP>2</SUP>/clump, a value similar to that recorded in a sago plantation in Batu Pahat, Malaysia.
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