OUTLINE OF CHAPTER X. 



IMPROVEMENT OF PLANTS. 



Basis of : 



1. Variation. 



2. Heredity. 



3. Selection. 



^.—IMPROVEMENT OF EXISTING TYPES 



I. Selection of Seeds. 



1. Table of Standards. 



2. A Study in the Selection of Seeds. ' 



II. Isolation of Seedlings. 



III. Given Normal Conditions. 



IV. Selection Should Be Repeated. 

 V. Example of Type Improvement. 



^.—ORIGINATING NEW VARIETIES. 



I. Determining the Ideal. 



1. Definite Characteristics. 



2. Characteristics Chosen Along the Natural Develop 



ment. 



3. Characteristics Must Harmonize ivith Each Other. 



(i) Earliness. 



(2) Size. 



(3) Number. 



4. One Leading Characteristic. 



244 



