Fig. 5. Micrographs of wild-type and dl flowers. The lemma and a half of palea were removed in all flowers. (A) A wild-type flower with two empty glumes, two lodicules, six stamens and one carpel with two stigmas. (B) A dl-1(H0788) flower forming the carpel with three stigmas (arrowheads). (C) A dl-1(T65) flower with an abnormal cell mass produced from the carpel (arrowhead) and an ectopic stamen (arrow) emerging from the base of the carpel. (D) A dl-1(T65) flower producing an extra stamen (arrow) and a mosaic organ, staminoid carpel (arrowhead), in which an anther is formed on the ovary. (E) A dl-2 flower without any apparent abnormality. (F) A dl-sup1 flower with a homeotic conversion of the carpel to stamens. (G) A cross section of the dl-sup1 flower. In addition to the six normal stamens (arrowheads) and two lodicules, ectopic stamens (arrows) are formed. (H) Extra stamens (arrowheads) are alternately produced in the position of the carpel in dl-sup1 flowers. (I) A dl-sup2 flower with homeotic conversion of the carpel into stamens. Bars: 500 µm.

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