in Hybridisation 51 



The hybrid seeds in the experiments with seed-coat are 

 often more spotted, and the spots sometimes coalesce into 

 small bluish-violet patches. The spotting also frequently 

 appears even when it is absent as a parental character. 



The hybrid forms of the seed-shape and of the albumen 

 are developed immediately after the artificial fertilisation 

 by the mere influence of the foreign pollen. They can, 

 therefore, be observed even in the first year of experiment, 

 whilst all the other characters naturally only appear in the 

 following year in such plants as have been raised from the 

 crossed seed. 



THE FIRST GENERATION [BRED] FROM THE HYBRIDS. 



In this generation there reappear, together with the 

 dominant characters, also the recessive ones with their full 

 peculiarities, and this occurs in the definitely expressed 

 average proportion of three to one, so that among each 

 four plants of this generation three display the dominant 

 character and one the recessive. This relates without 

 exception to all the characters which were embraced in 

 the experiments. The angular wrinkled form of the seed, 

 the green colour of the albumen, the white colour of the 

 seed- coats and the flowers, the constrictions of the pods, 

 the yellow colour of the unripe pod, of the stalk of the 

 calyx, and of the leaf venation, the umbel-like form of the 

 inflorescence, and the dwarfed stem, all reappear in the 

 numerical proportion given without any essential alteration. 

 Transitional forms were not observed in any experiment. 



Once the hybrids resulting from reciprocal crosses are 

 fully formed, they present no appreciable difference in their 



42 



