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Flowering mutants

Tomato presents flowering features complementary to those observed in the model species Arabidopsis. Thus, as many other important crops, tomato is a phothoperiod-insensitive species, whose flowering occurs in a sympodial manner (the shoot apical meristem that becomes reproductive is replaced by the next adjacent vegetative one). The balance between the genetic programs determining the formation of either inflorescence meristems or floral meristems has a great impact in the number of flower per truss, a parameter of large agronomic importance. Also important are mutations affecting whorl identity, since they may influence male and female fertility, as well as flower and fruit shape. Tomato flowering mutants carry alterations in genes from different classes of molecules affecting meristem or organ identity (CETS, MADboxes, F-boxes). Please click on the name of each mutant to obtain information about its molecular identity (gene function, if known) and phenotype (gene effect of a given allele).


Self pruning (Sp) - wild type allele

Flowers augmented per truss (Fat)

castrato (cst)

single flower truss (sft)

multiflora (mult)

uniflora (uf)

jointless1 (j1)

jointless2 (j2)

male sterile 10 (ms10)









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