Genotypic Variation of Physiological Nitrogen Use Efficiency and its Relationship with Agronomic Characters in Rice
2005
Cho, Y.I. (National Institute of Agricultural Biotechnology, RDA, Suwon, Republic of Korea) | Koh, H.J. (Seoul National University, Seoul, Republic of Korea), E-mail: [email protected]
This study was carried out to evaluate the variation of physiological nitrogen use efficiency (PNUE=grains yield/total nitrogen content of shoot) in rice varieties under different nitrogen (N) fertilizer levels, and to investigate the relationship of PNUE with agronomic characters in order to obtain the basic information for breeding lines of high PNUE. PNUE of rice varieties ranged from 24.5 to 64.4 and from 40.6 to 84.0 under medium N and non N fertilizer levels, respectively.
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