426 



THE WHEAT PLANT 



yield of grain of the plants produced by these selected grains was obtained, 

 the experiment being repeated for five successive years. 



The plants were grown in rows 6 inches apart and 3 inches asunder in 

 the row. The results are given below : 



From these results it is seen that the average lengths of the ear and the 

 average weights of the grains per ear of plants produced from the large 

 grains are but slightly greater than those of the progeny of small grains, 

 and the difference may not be significant. 



The number of ears per plant and the average yield per plant is, how- 

 ever, very much greater every year from the large seed than from the 

 small, and the difference in vigour was manifest throughout the whole 

 life of the plants. 



