i;xpe;rimj;nts in breeding sweet corn. 267 



shapen. No ears were put in this class which would not be 

 graded as good seed ears by a factory distributor or seedsman. 

 The nubbins included all small, malformed or defective ears 

 which could never be used for seed purposes. The "total seed" 

 of the tables below is the sum of Ai and good seed. 



The data obtained from this sorting and weighing of the 

 product of the ear-to-row plots are given in Tables 3 and 4, 

 Table 3 dealing with Type I, and Table 4 with Type II corn. 

 In the case of Type II corn only 11 rows were considered of 

 sufficient merit to warrant saving them as a whole for seed. 

 All of the rows of Plot I were saved, though not all were ac- 

 tually used for seed. 



The arrangement of data in Tables 3 and 4 is as follows : in 

 the first column is given the number of the row ; in the second 

 column the number of the "parent ear" for this row. Thus ear 

 No. 143 was the ear used in planting row No. 100. Detailed 

 data regarding the characteristics of each of the "parent ears" 

 of Tables 3 and 4 are given in Tables i and 2 above. The next 

 two main columns give for the Ai seed and good seed respect- 

 ively the following information: (a) the number of ears falling 

 in the Ai class, (b) the weight (in pounds) of corn shelled from 

 these ears, and (c) the weight of the cobs of these ears. The 

 next main column gives the same information in regard to all 

 ears fit for seed. The figures here are obtained by adding those 

 given in the two preceding columns. The sixth main column 

 of the tables gives the calculated yield of seed per acre, based 

 upon the yields in the "total seed" column. The last main 

 column of the tables gives the figures in regard to nubbins and 

 ears too poor to be classed as good seed. 



