Sweet potato germplasm evaluation in the Philippines in 1990. Working Paper No. 90-7
1990
Ona, I. | Chujoy, E.
Four experiments on sweet potato germplasm evaluation were conducted in Canlubang (150 m asl), Laguna [Philippines] from December 1989 to May 1990. The germplasm evaluated included clones from a local lowland and highland germplasm collection and introduced clones from Papua New Guinea, Taiwan, and USA. Results indicated a mean root yield increase of 57% to 122% when sweet potato were harvested at 120 days after planting (DAP) compared to those at 90 DAP. Similarly average root size increased by 32% to 191%. In general the biggest roots were produced by the highest yielding clones. Mean dry matter (DM) content ranged from 24.8 to 30.6% at 90 days and 25.7 to 29.4% at 120 days. Many of the clones gave more than 30% DM at both harvest dates. Several promising clones were identified for high yield and DM content.
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