Abstract

Native upland rice varieties collected from farmers growing in the highlands of Phetchabun Province is another source of genetic resources that can be used in breeding projects. Therefore, this experiment aims to evaluate the agricultural characteristics, yield components, and yield of 9 native upland rice varieties collected from the highlands of Phetchabun Province. They were grown in the central plains, namely the Lopburi Research Center and the National Corn and Sorghum Research Center, compared to those grown in the highlands, namely the Phetchabun Research Station. The results of the experiment showed that all 9 rice varieties grew well. Rice grown at the National Corn and Sorghum Research Center produced higher yields per plant than those grown at the Lopburi and Phetchabun Research Stations. When considering the number of grains per panicle, which is an important yield component, it was found that the white glutinous rice and the red pom glutinous rice had more than 200 grains. However, the disadvantage of all 9 rice varieties is that the plants are quite tall, which is not suitable for promoting planting in the central region because the tall plants are easily broken. However, the results of this experiment will be basic information for selecting genetic material for upland rice breeding projects in the future.