126 



Gardening 



Cross-breeding toma- 

 toes. Any two varieties 

 of tomatoes may be 

 crossed. If they are 

 planted together in 

 spring, they are certain 

 to have some flowers 

 opening at the same 

 time. For experimental 

 purposes it is well to 

 select two varieties with 

 marked differences, as, 

 for example, a yellow 

 pear-shaped variety and 

 a red variety of ordinary 

 shape. 



As the stamens and 

 pistils are both found in 

 the same flower, it is 



been bagged to protect them from other nCCCSSary, if One is to be 

 pollen. . . . . 



certain of the parentage, 



to remove the stamens from the flowers that are to be 

 pollinated (see Fig. 75). 



Cross-breeding pumpkins. The patty pan, the sum- 

 mer crookneck, and the pumpkin may all be crossed, 

 yielding interesting results as to shape, color, and size 

 of fruits in the second hybrid generation. The stamens 

 and pistils are in separate flowers on the same plant. 

 The pistillate flowers may be recognized in the bud by 

 the enlarged part (ovary) which will later become the 

 fruit. 



FIG. 77. A cluster of tomato flowers have 



