xviii CONTENTS 



Page 



100. Physiological Processes Accompanying Pollination -and Fertiliza- 

 tion. Germination of Pollen and Growth of the Pollen Tube. 

 Phenomena Accompanying Termination of Blossoming, Shed- 

 ding of Immature Fruit 437 



101. Ripening of Fruit and Seeds and the Biochemical Processes 

 Accompanying It. Artificial Acceleration of Ripening 442 



102. Influence of Environmental Conditions on the Course of Ripening. 

 Shriveling of Grain and Its Causes. Dependence of the Chemical 

 Composition of Fruit and Seeds on Geographic Factors 447 



CHAPTER XIV 

 Seasonal Phenomena in the Life of Plants 



103. The Dormant Period of Plants. Autumnal Maturation of Buds 

 and Wood of Trees. Shedding of Leaves 453 



104. Artificial Breaking of the Rest Period. Significance of Forcing 



for Agricultural and Floricultural Practice 456 



105. Conditions of Seed Germination 459 



Index 465 



