Table 1. Classification of mutants in terms of their flower phenotype
Degree of rescue of gal-3 Genotype* Flower phenotype
0 gal-3 Retarded growth of petals, stamens and pistils; male sterility with lack of mature pollen
1 gal-3 rgl1-1 Partial rescue of gal-3 with elongated pistils
gal-3 rgl2-1
gal-3 gai-t6
2 gal-3 rga-t2 Partial rescue of gal-3 with elongated petals, filaments, and pistils
gal-3 rgl1-1 rgl2-1
gal-3 rgl1-1 gai-t6
gal-3 rgl2-1 gai-t6
gal-3 rgl1-1 rgl2-1 gai-t6
3 ga1-3 rgl1-1 rga-t2 Partial rescue of gal-3 with more elongated petals, filaments, and pistils
gal-3 gai-t6 rga-t2
ga1-3 rgl1-1 gai-t6 rga-t2
4 gal-3 rgl2-1 rga-t2 Significant rescue of gal-3 with normal petals, pistils, and much developed stamens; partial infertility of early arising flowers
gal-3 rgl2-1 gai-t6 rga-t2
5 gal-3 rgl1-1 rgl2-1 rga-t2 Almost total rescue of gal-3 with normal petals, stamens and pistils; normal fertility
gal-3 rgl1-1 rgl2-1 gai-t6 rga-t2
  • * All of the plants are of the same Landsberg erecta background

  • Representative mutants displaying different degrees of rescue of gal-3 are shown in Fig. 6

  • Mutants in this degree generate two kinds of flowers: flowers arising at apical positions in a main inflorescence are fertile with significant rescue of gal-3 whereas flowers arising at basal positions are still sterile with the degree 3 phenotype