抄録
The disulcate pollen grains of Metroxylon sagu extracted from different soil layers up to 1 m were investigated to elucidate their growth and distribution history in the three sago growing sites of Pangasugan (western part of Leyte, facing the Camotes Sea) and Julita and Dulag (eastern part of Leyte, facing the Pacific Ocean), Leyte, Philippines. The M. sagu pollen grains were found to be medium-sized, elliptical, and disulcate under a transmitting-light microscope at a magnification x400. In Pangasugan, M. sagu pollen grains had a frequency percentage of seven only in the surface layer; they were not found in the subsurface layers. Meanwhile, the pollen grains of M. sagu at Julita and Dulag were present in the surface and subsurface soil layers with high frequency percentages. These results suggested that the long cultivation of M. sagu had been developed in wide alluvial lowlands of the eastern part of Leyte Island especially. It is concluded that the people who migrated to Leyte, Philippines, kept M. sagu and utilized the biomass of M. sagu, including starch.
https://ror.org/00f2txz25 
