Geneally, rice seeds regardless indica or japonica are showing low germination ratio or completely lost germination ability together with lost of good eating quality under high temperature and humidity conditions. Thus, this study was designed to evaluate a longevity for conservation of good eating quality during long term storage in rice. For the longevity evaluation, germination ability was studied after 5 days of high temperature and humidity stress (50℃/RH 95%). Dharial, originated from Bangladesh and showing weedy type with red pericarp, was selected as a good donor for longevity genes. A mutant was developed from Dharial through EMS mutagenesis and two populations of Dharial/4*Ilmibyeo and Dharial/4*Gopumbyeo were also developed for genetic study. In the 2-DE analysis followed by MALDI-TOF MS with wild and mutant lines, several candidate genes were identified. In the longevity test of two populations, a few lines showing good germination ability after high temperature and humidity stress were selected and subjected to confirm the relationships between longevity and conservation of good eating quality under long term storage.

• Jun Hyeon Cho(Dept. of Functional Crops, NICS, RDA) Corresponding Author
• Jong Hee Lee(Dept. of Functional Crops, NICS, RDA)
• Ji Yun Lee(Dept. of Functional Crops, NICS, RDA)
• Young Bo Son(Dept. of Functional Crops, NICS, RDA)
• Soo Kwon Park(Dept. of Functional Crops, NICS, RDA)
• Sang Yeol Kim(Dept. of Functional Crops, NICS, RDA)
• Choon Woo Lee(Dept. of Functional Crops, NICS, RDA)
• Un Sang Yeo(Yeongdeog Substation, NICS, RDA)
• Dong Soo Park(Dept. of Functional Crops, NICS, RDA)
• You Cheon Song(Dept. of Functional Crops, NICS, RDA)
• Min Hee Nam(Dept. of Functional Crops, NICS, RDA)