HEREDITY AND VARIATION 



257 



bulbs, as the tulip or hyacinth. All of the above means of prop- 

 agation are asexual and are of importance in our problem of 

 plant breeding. 



Plant breeding plots. (Minnesota Experiment Station.) 



The Work of Gregor Mendel. — Fifty years ago, an Austrian 

 monk, Gregor Mendel, found in breeding garden peas that these 

 plants passed on certain fixed characters^ as the shape of the 

 seed, the color of the pod when ripe, and others, and that when 

 two pea plants of different characters were crossed, one of these 



PUNTER, CIV. BI. 17 



