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. 2002 Jul;129(3):1150–1159. doi: 10.1104/pp.001677

Figure 6.

Figure 6

RNA in situ analysis of PEAM4 expression in developing pea flowers. A, PEAM4 expression in wild-type genotype HL 107 was confined to the flower and was not detected in vegetative or inflorescence tissue (I1 and I2 indicate the primary and secondary inflo- rescences, respectively). Expression occurred throughout young floral primordia (flower F1) at stage 2 and was also apparent in the oblique section through flower 2 (F2) and in a transverse section through the base of an older flower bud (FB) at approximately stage 7 of development. B, Stage 4 (F1) of development in genotype HL 107, showing PEAM4 expression in the petal region of the petal/stamen common primordia (pe) and the sepals (se). Expression was absent from the stamen region of the petal/stamen common primordia (st) and the carpel primordium (c). Stage 5 (F2) flower showing expression in the outer sepal whorl. Petals express PIM at this stage but were not in the plane of this section. C, Stage 7 flower bud of genotype HL 107 showing PEAM4 expression limited to sepals and petals and absent from stamens (st) and the carpel. D, Stage 7 flower bud of the afila genotype, JI 1195, showing PIM expression limited to the two outer whorls and absent from the subtending compound leaf (L). Magnification ×75 in A through D.