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"Rice has been an important cultivated crop in Korea since c. 1500 BC, but in historical times it was a luxury food too valuable for consumption by the farmers who produced it. It was widely used as a form of currency and for tax payments. Analysis of plant remains from Sangdong-dong and Songguk-ri, two Bronze Age settlements of the early first millennium BC, however, reveals that rice was not the preserve of elites in that period. The situation changed with the state formation during the first three centuries AD, when rice consumption became increasingly restricted. Thus in Korea rice was not initially cultivated as a luxury food, but became so through social and political change."

"In Korea's Ancient Koguryo Kingdom: A Socio-Political History, Noh Taedon draws on all available research to reconstruct a multifaceted view of a Proto-Korean nation-state that mattered greatly in Northeast Asia during the seven centuries of its existence (37 BCE to 668 CE)."

"Java, as the largest populated island i Indonesia, has experienced tremendous agricultural land use conversion, mostly to industrial and settlement uses...."

"Successful application of genetic transformation technique, espicially in developing rice variety resistan to brown plant hopper and stem borer, will depend on transgene being expressed and the gene inherited in a stable and predictable manner...."

"The polyamines such as putrescine, spermidine, and spermine were reported to increase green plant regeneration in rice anther culture. Low response of anther culture of rice sub-spicies indica may be improved with the addition of putrescine in the culture media..."