Oryza sativa Mountains of northern Luzon, Philippines. Glaszmann (1987) used isozymes to sort "O. sativa" into six groups: "japonica", "aromatic", "indica", "aus", "rayada", and "ashina". Garris "et al." (2004) used simple sequence repeats to sort "O. sativa" into five groups: "temperate japonica", "tropical japonica" and "aromatic" comprise the "japonica" varieties, while "indica" and "aus" comprise the "indica" varieties. Rice has been cultivated since ancient times and "oryza" is a classical Latin word for rice. "Sativa" means "cultivated". Debates on the origins of the domesticated rice are numerous. In 2011, genetic evidence showed that all forms of Asian rice, both "indica" and "japonica",
Mythimna separata light dorsal stripe, with black-brown lateral stripe along spiracle line. spiracles brown with black rim. Pupae are yellowish brown and shiny. The moth flies from January to April depending on the location. The larvae feed on a range of agricultural plants like "Zea mays", "Sorghum bicolor" and "Oryza sativa" and are thus considered a pest. Caterpillars do not feed on "Momordica charantia" due to the presence of the triterpenoid glucoside called momordicine II, which is a natural inhibitor of caterpillar actions. China experiences periodic outbreaks of northern armyworm infestation. The outbreak in 2012 was particularly severe. Larva can be hand