M\CARONI WHEAT KERNEL CROSS SECTIONS SHOWING YELLOW 



BERRY SPOTS 



Cross sections of the seed of a pure macaroni wheat plant, showing a clear hard grain (a) and 

 varying sizes of yellow-berrv spots (b, c, d). The air spaces causmg these opaque spots, he in 

 dates with quite definite margins. The proportion of gluten to starch is roughly indicated 

 by the light and dark areas. (Fig. 15. j 



