CONTENTS. 
PAGE 
Introduction 5 
The theory of multiple factors affecting a single character 
complex 8 
Methods and materials used 27 
Tnheritance of- — 
Number of rows per ear 29 
Length of ears 40 
Diameter of ears 54 
Weight of seeds 57 
Breadth of seeds 61 
Height of plants 64 
Number of nodes per stalk 79 
Tnternode length 82 
Number of stalks per plant 87 
Total length of stalks per plant 93 
Duration of growth 96 
Summary and general conclusions 103 
Manipulation of quantitative characters in plant breeding. . 110 
Literature cited 118 
