Breeding Temperate Japonica Rice Varieties Adaptable to Tropical Regions: Progress and Prospects

Temperate japonica rice is mainly cultivated in temperate regions. Many varieties have a superior grain quality that preferred Northeast Asian countries such as Japan, Korea, and China. The changes consumers’ preferences Southeast Asia Western has contributed to increasing the demand for japonica. Most developed regions typically exhibit extra-early flowering under short-day conditions tropics, which usually results severely reduced yields. Since 1992, we been developing can adapt tropical environments meet rice, having released six Philippines. Especially, yield of one varieties, Japonica 7, was comparable yields leading indica Here, discuss current breeding initiatives future plans development tropical-region-bred rice.