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Morphology of generative organs in Atrgtb mutants. (A) Flowers, scale bar=1mm. (B) Siliques, scale bar=5mm; the arrowheads indicate the unfertilized ovules. (C) Number of seeds per silique after self-pollination, n>20. Bars represent the mean ±SE. Statistical significance analysed by Student t-test, *P<0.05, **P<0.01, ***P<0.001.
