북한벼 품종에서의 혐기성 발아와 침수 스트레스에 대한 유전적 구성 설명 = Elucidation of Genetic Composition for the Tolerance of Anaerobic Germination and Submergence Stresses in North Korean Rice varieties

다국어 초록 (Multilingual Abstract)

Rice is the most important food crop (more than 3 billion people globally). Submergence is the third most important abiotic stress (11 % of rice growing areas).
The study findings indicated that, overall anaerobic germination (AG) was significant, very high 83%. AG tolerance is associated with faster germination and faster elongation of coleoptiles. About 52% of NK rice varieties showed the fastest germination {57 varieties (28%) exhibit rapid coleoptile elongation more than checks - 22 cm} however No significant difference. About 91 varieties (45%) AG showed 100% survival rate (equal to IR64-AG1). About 48 varieties (24%) had higher seedling height of 29 cm (after desubmergence) No significant difference. Submergence tolerant amongst NK rice varieties had negative correlation: very low (4.7%). NK had highest survival mean, only five (5 out of 202) varieties showed the tolerance, and R103 significantly appeared on all three replications
The study aims to elucidate morphological analysis of anaerobic and Submergence tolerance traits of 210 North Korean rice genotypes and to develop mega varieties with AG 1 and Sub1 introgression that are tolerant to submergence.