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Identification of Quantitative Trait Loci in Rice for Yield, Yield Components, and Agronomic Traits across Years and Locations

^a National Institute of Agricultural Biotechnology, Suwon 441-707, Korea
^b current address: Dep. of Crop Science, Chungbuk National Univ., Chongju 361-763, Korea
^c Honam Agricultural Research Institute, Iksan 570-080, Korea
^d Youngnam Agricultural Research Institute, Milyang 627-130, Korea;. H. Gauch, Crop and Soil Sciences, Cornell Univ., Ithaca, NY 14853-1901
^e Dep. of Plant Breeding, Cornell Univ., Ithaca, NY 14853-1901. This research was supported by grants from the Rural Development Administration and the Rockefeller Foundation's Biotechnology Career Fellowship (RF95001, No. 342) for Y.G. Cho's work at Cornell

View larger version (30K): [in this window] [in a new window]   Figure 1. Frequency distribution of the 164 Milyang23 x Gihobyeo inbred lines for nine traits evaluated in five environments in Korea. Black arrows represent trait means of Milyang23, while white arrows indicate trait means of Gihobyeo.

View larger version (51K): [in this window] [in a new window]   Figure 2. Molecular genetic map of rice chromosomes 16 on the Milyang/Gihobyeo recombinant inbred (MG RI) population derived from a cross between Milyang23 (IxJ) and Gihobyeo (J) along with the positions of quantitative trait loci (QTLs) for nine traits of rice. Marker locations and distances are the same as in Cho et al. (1998b) and centromeres are indicated by black bars within each chromosome. Filled white boxes with a black triangle indicate increased effects from Milyang23 and black boxes with a white triangle indicate increased effects from Gihobyeo. The peak of the QTL interval plot is indicated by a triangle. The QTL boundaries are defined by the closest flanking markers that reach the empirically-determined significance threshold for each trait (p < 0.05).

View larger version (44K): [in this window] [in a new window]   Figure 3. Molecular genetic map of rice chromosomes 712 on the Milyang/Gihobyeo recombinant inbred (MG RI) population derived from a cross between Milyang23 (IxJ) and Gihobyeo (J) along with the positions of quantitative trait loci (QTLs) for nine traits of rice.