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Haploid melons were obtained from 12 cultivars when ovules pollinated with irradiated pollen were cultured on either MS medium without plant growth substances or E20A medium with 0.01mg/l IAA.All the plants obtained were haploid.The chromosome doubling occurred only in the root tips of haploid plants, not in other organs.
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Katoh et al. (1993) studied this question.
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