236 



Journal of Agricultural Research 



Vol. XII, No. 5 



Table I. — Behavior of plants from Maryland- and Texas-grown seed subsequently 

 planted in Maryland and Texas — Continued 



BOONE 



The yield of the plants from the Maryland- and Texas-grown seed is 

 made comparable by expressing the yield of the former as a percentage 

 of the mean yield of both. For example, in Table I where the behavior 

 of the Stockton X Boone hybrid is considered, the yield per plant of the 

 first row at Lanham, Md., which was from Maryland-grown seed, is shown 

 as 0.90 pound; the adjoining row from Texas-grown seed yielded 1.15 

 pounds per plant. The mean of the yield of these two rows is 102.5 

 pounds, and the yield from the Maryland-grown seed is 87.8 per cent of 

 this mean, the value given in the fourth column. The average of the 10 

 comparisons is, in this case, 96.08 per cent — that is, the yield of the 

 plants from the Maryland-grown seed averages 3.92 per cent below the 

 mean yield of this strain grown in Maryland. This expression for the 

 relative behavior in Maryland of the plants from the Maryland-grown seed 

 is to be compared with the results of the similar comparison made in 

 Texas, given in the next three columns. From these it is seen that in 

 Texas the yield per plant of the plants from Maryland-grown seed was 

 98.25 per cent of the mean yield of the strain. 



