SUBJECT INDEX 



231 



57, 61, definition 167, destruction of 

 164-5, 178, 180, 182, 187, evidences 

 for 152-5, measurement of 89, 155, 

 158-9, nature of 190-9, same in 

 many plants 42, synthesis 158-83, 

 translocation of 154-6, 176-9, 184-6 



Flowering stages 89-90 



Flowering time during year 21 



/7-Fluorophenylalanine 171, 174 



Fluorescent light 74, 82 



Foot candle 28 



Forest floor 27 



Fractional induction 157 



Fructosans 196 



Fructose 196 



Gametes 9, 199 

 Genes 8, 51, 152, 197, 198 

 Genetic material 48, variability 205 

 Genetics 1, 64, of cold requirement 51 

 Germination 103-4, 109-10, 119, 125, 



130 

 Gibberellins Fig. 4-3, 58, 60-2, 65-6, 



68-9, 124-6 167, 195-6, 203, 216 

 Glutathione 99, 196 

 Glycine 143 

 Grafting experiments 61-2, 85-6, 



153-4, 190, 193-4 

 Greenhouse Fig. 5-1, 72 

 Growth chamber Fig. 5-2, 73 

 Growth curve 95, 160-2 

 Growth rates 129 

 Growth regulators 57, 168, 195 

 Guanine 171 



H 



Half-expanded leaf 161 



Half-life 137 



Half-time decay curve 141 



Height of the flowering stem 88 



Hemoglobin 108 



Heterotrophic growth {Lemtia minor) 



109 

 High energy reaction 111-2, 123, 142, 



146 

 High intensity light 5, 142, process 5, 



93,97-9, 117, 186,217-8 

 High school students 72 

 Higher plants 110 



Histochemistry 199 



Histological changes 200-1 



Histone 202 



Homeostatis 191, 193 



Hook, plumular 104-5, 109, 112 



Hormone {see flowering hormone) 



Hormone, definition 153 



Hour-glass clock 146, principle 136-7 



Humidity 81, controlling flowering 205 



Immortality 9 



Incandescent lights 74, 82 



Indeterminate plant growth 197 



Indole acetic acid (lAA) 171 



Induced state 52, 190-6, 198-9, 203, in 

 Perilla 193 



Induction 190-2 



Inductive (delayed) response 17-8, 46, 

 67-71 



Indeterminate form of growth 9 



Infra-red light 25-6 



Inhibitor 156-7, 180, 196, 216 



Interactions 57 



Intermittent light and dark periods 98 



Interactions between day-length and 

 temperature 12, 19, 23 



Interference filters 82 



Intermediate-day plants 11, 17 



Internal oscillator 134 



Interruption of dark period, with light 

 13, 30, 81, 102, 114-8, 134-5, 139-40, 

 177, 217, with high or low tempera- 

 ture 165-6 



Interval between red and far-red 118 



Isolation: of flowering hormone 152, 

 of phytochrome 106-8 



Jarovization 47, 49 



Juvenile: features 94, phase 67, 94, 96 



Juvenility 93, 198-9 



Kinetics of light action 1 12 

 Kinetin 57 



Lactones 57 

 Latitude 30-2 



