86 Principles of Plant Culture. 
buds usually diminishes as we recede from the terminal bud. 
On a given plant, the buds are usually less vigorous on 
shoots having very long and thick internodes, i. e., the 
shoots that grew very rapidly (118), than on shoots with 
internodes of average length and thickness (129). 
Fic. 42. Fruit spur of the pear. Re- 
duced one-half. (After Barry). 
Cions (379) or cuttings (358) 
A of dormant wood should be 
made from shoots having inter- 
nodes of average length and 
Fic. 41. Fruit spurs of the apple. thickness and with plump and 
A, points at which apples were de- well-matured buds. 
tached the preceding year; W, wrink- ‘ : 
les, marking points at which fruit and In the potato tuber, which is . 
leaves were detached in previous the thickened terminus of an 
years. (After Hardy). : 
underground stem, (Fig. 32) 
the most vigorous shoot comes from the terminal bud (the 
so-called ‘“seed-end’’), hence rejecting this part of the tuber 
in planting, as has often been recommended, is detrimental 
to the crop. 
135. Conditions Affecting the Formation of Flower- 
Buds. The majority of cultivated plants are grown either 
for their flowers or the product of their flowers, i. e., fruit 
or seed. But the flower is not an essential part of the plant, 
