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期刊论文
Two ancient rounds of polyploidy in rice genome*
Zhang et al./J Zhejiang Univ SCI 2005 6B (2): 87-90，-0001，（）：
An ancient genome duplication (PPP1) that predates divergence of the cereals has recently been recognized. We report here another potentially older large-scale duplication (PPP2) event that predates monocot-dicot divergence in the genome of rice (Oryza sativa L.), as inferred from the age distribution of pairs of duplicate genes based on recent genome data for rice. Our results suggest that paleopolyploidy was widespread and played an important role in the evolution of rice.
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