EXPERIMENTS IN PLANT BREEDING 



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either red flowers or white flowers. If red flowers are pollinated 

 with pollen from red flowers, their seeds will produce red flowers. 

 If white flowers are pollinated with pollen from white flowers, their 

 seeds will produce plants with white flowers. But if red flowers 

 are pollinated with pollen from white flowers, or white flowers with 

 pollen from red flowers, the seeds will produce plants bearing pink 

 flowers. This pink is a blend of the white and red colors. A 

 flower of this type and the seed that produces it is called a hybrid. 

 If these hybrids are allowed to pollinate themselves, their seeds 



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The hybrids of the Japanese four-o'clock show incomplete dominance. The pure generation 

 is usually called the parental, P ; the hybrid generation is the Fj ; and the next generation 

 showing segregation is the F 2 . The little circles represent gametes and are colored to show 

 genes or the color determiners which each flower carries. 



