PLANT REPRODUCTION 



105 



stock and wrapped so as to hold it firmly in placa The two cam- 

 biums unite, the scion grows and finally the stock is pruned, 

 so that the shoot from the scion is the only one remaining. Bud- 

 ding is usually practiced in the fall. 



Both grafting and budding are of the very greatest import- 

 ance in the maintaining and growing] of plants in which the 

 seeds do not produce plants exactly like the parent. Many of 

 our fruits, and especially many woody plants, such as grapee. 



Fia. 78. — Steps in budding; (a) the bud or scion, (5) the T-shaped slit in the bark of the 

 stock tree, , (cj same opened, (d) the bud in place, (e) the wound wrapped with raffia or 

 waxed cotton. (Productive Farming.) 



roses, privet, willows and poplars, are propagated by means of 

 stem cuttings. 



Results of Non-Sexual Reproduction. — Many plants in 

 which the non-sexual methods of reproduction are highly devel- 

 oped have partially or completely lost the power of producing 

 seeds. The potato and many of our bulb plants are never grovra 

 for seed, except for experimental purposes. Bananas, pineapples 

 and a great number of ornamental plants are grown entirely 

 from cuttings. Many plants do not come true from seeds; i.e., 

 the offsprings are very different from the parent. Therefore, 



