studies on the Genetics of Flower- Colours in 

 J*orf {(/((((( f/rfnifh'/7or(f. 



By 



S. Ikeno. 



With Plate II. • 

 CONTENTS. 



PllgC. 



Introduction 93 



Materinls iind Methods 94 



Flower-Colours 90 



Fnctors 97 



Crossing Exiieriments. 



Cross I. ]nite-I X oninje and vice versa 98 



n. Yelloir X ul,Ue-1 99 



,. rn. IiriJ X oranrjr (iTid rice versa 101 



r\'. Wliite-Ix rc/dle-II and vice versa, etc 103 



„ V. W?iUe-Ix mt(ienta .ind mce vei:<tri 103 



„ YI. U'hile-IIx magenta 10(> 



„ VII. WMte-IIx orange and vice versa lOS 



„ VIII. Magenta x orange 112 



Multiple Allelomorphism 117 



Note on the so-cnllol " pseiido-white " Race 119 



Colours o£ Vegetative Organs and Floral Parts 120 



Mutations, etc 121 



Summary 131 



Explanation of Plate IL 133 



KRR.ITA. 



insert or succemve after siraultaneom 

 insert or successive after simultaneous 

 lead white-n x orange instearl of white-H x magenki 



