BREEDING OF VEGETABLES 



257 



rnuskmelon pollen. Even if crossing occurred, there is no con- 

 clusive evidence that xenia would result. 



CUCUMBER 



Wellington, (1913) studied the inheritance of the following char- 

 acters: color, size, number of spines, smooth or rough skin, and 

 obtained ratios indicating monohybrid segregation. Smooth skin 

 and small spines, few in number, appear to be linked. Heterosis 

 shown by increased number or size of fruit, has been observed 

 in the F\ of certain cucumber crosses (Hayes and Jones, 1916). 

 The Fi of a cross (Reeves, 1918) between American type (20 per 

 cent parthenocarpic) and English type (normally parthenocarpic) 

 showed 20 per cent parthenocarpy. 



MUSKMELON 



Lumsden (1914), of the New Hampshire Agricultural Experi- 

 ment Station, has made rather extensive studies of inheritance 

 in the muskmelon. The following tabular statement gives a 

 summary of his work: 



TABLE LXV1. INHERITANCE IN THE MUSKMELON IN A CROSS BETWEEN 

 THE VARIETIES SUTTON'S SUPERLATIVE AND DELICES DE LA TABLE 



17 



