Chromosomal location of HCA1 and HCA2, hybrid chlorosis genes in rice

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Abstract

Many postzygotic reproductive barrier forms have been reported in plants: hybrid weakness, hybrid necrosis, and hybrid chlorosis. In this study, linkage analysis of the genes causing hybrid chlorosis in F2 generation in rice, HCA1 and HCA2, was performed. HCA1 and HCA2 are located respectively on the distal regions of the short arms of chromosomes 12 and 11. These regions are known to be highly conserved as a duplicated chromosomal segment. The molecular mechanism causing F2 chlorosis deduced from the location of the two genes was discussed. The possibility of the introgression of the chromosomal segments encompassing HCA1 and/or HCA2 was also discussed from the viewpoint of Indica-Japonica differentiation. Copyright © 2012 Katsuyuki Ichitani et al.

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Ichitani, K., Takemoto, Y., Iiyama, K., Taura, S., & Sato, M. (2012). Chromosomal location of HCA1 and HCA2, hybrid chlorosis genes in rice. International Journal of Plant Genomics, 2012. https://doi.org/10.1155/2012/649081

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