Maize(Zea mays L.) is a monoecious grass plant in which mature male and female florets form the tassel and ear, respectively. Maize is often used as a model plant to study flower development. Several maize tassel seed mutants, such as the recessive mutants tasselseed1(ts1)and tasselseed2(ts2), exhibit a reversal in sex determination, which leads to the generation of seeds in tassels.The phenotype of the dominant mutant, Tasselseed5(Ts5),is similar to that of ts2. Here, we positionally cloned the...

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