Fig. 2From: Fast-track breeding system to introduce CTV resistance of trifoliate orange into citrus germplasm, by integrating early flowering transgenic plants with marker-assisted selectionPrecocious flowering and fruiting of the BC2 progenies a, b, c and precocious flowering of the BC3 progenies around 3 weeks after seed planting d. The normal flower e was generated in the BC3 progenies with transgenes and fertile pollen f that was obtained from the flowersBack to article page