INDEX 



Absorption, 41-45, 87, 88, 166, 184 



diffusion (see) 



mineral salts, 19, 44, 45, 87, 166 



potassium, 44, 45 



selective, 45 



water, 15, 88, 184 

 Acidity in soils, 159, 171 

 After-ripening, 190 

 Alleles, 132-134 

 Aluminum sulphate, 171 

 Ammonia, 178, 179 

 Ammonium nitrate, 176 

 Ammonium sulphate. 111, 171, 176 

 Aneuploidy, 146 

 Annual, 104-107 

 Anther, 113-115, 116 

 Aphids, 100, 101 

 Apple, 115, 120 

 Auxin-a, 151-157, 153 

 Auxin-b, 154 

 Azalea, 159, 171 

 Azotobacter, 161, 177-180 



B 



Backcross, 136, 137 



Bacteria, 51, 161, 162, 178-180 



Bark, 55 



Bean seed, 8, 32 



Biennial, 104, 105, 107, 110, 189 



Bios, 151, 152 



Black Leaf Forty, 101 



Bluegrass, 109, 110, 191 



Bonemeal, 47, 172, 177 



Bordeaux mixture, 102 



Boron, 164, 165, 168, 169 



Bracts, 118 



Buckwheat, 168, PI. XI 



Bud, 53-58, 61 



active, 56 



adventitious, 57 



dormant, 56 



flower 56, 61 



kinds, 56 

 Budding, 70 

 Burbank, 69, 137, 138 



Cabbage, 144 



Calcium, 43, 159, 164-166, 169, 171, 172 



Calcium carbonate, 171 



Calcium oxide, 171 



Calyx, 115 



Cambium, 53, 54, 55 



Capillary water, 48 



Carbohydrate, 79, 93-96, 185 



Carbolic acid. 111 



Carbon, 164, 165, 175 



Carbon-bisulphide, 191 



Carbon-nitrogen ratio, 93-96, 112 



Carpels, 116 



Carrot, 30, 105, 113 



Cell, 21-29 



differentiation, 183 

 division, 22, 28, 131 

 parts, 21-24 

 sap 



concentration, 45, 48, 88 

 constituents of, 42 

 size, 21,5^ 

 structure, 23-2S 

 wall, 23, 24, 42 

 Cellulose, 23, 80 

 Chlorophyll, 76, 79, 82 

 Chloroplast, 25, 73, 76 

 Chromatin, 25 



Chromosomes, 25-29, 22, 27, 131-135, 141- 

 143, 149, 150 

 homologous, 132-134, 143 

 Classification of plants, 10 

 Clone, 67 

 Clostridium, 179 

 Clover, 190 

 Cocklebur, 190 



Colchicine, 147, 148, PI. VIII & IX 

 Coleoptile, 14, 153, 154 

 Complete fertilizer, 169 

 Complete flower, 115 

 Composite flower, 118 

 Compost, 161, 162 

 Contour, 163 

 Copper, 164, 165, 169 

 Cork, 55 



197 



