266 



GROWTH HORMONES IN PLANTS 



Schafer, W., 124 

 Schmid, G., 106 

 Schmitz, H., 60, 66, 98, 123, 197- 



198 

 Schober, A., 169 

 Schopfer, W. H., 102, 103 

 Schtscherback, J., 191 

 Schumacher, M., 199 

 Schwarz, F., 203 

 Schweighart, O., 161, 215 

 Scott, K. G., 160, 215 

 Secale, 57, 198 

 Sequoia, 62 

 Setaria, 172, 198 

 Seubert, E., 12, 24, 63 

 Seybold, A., 133-134 

 Shadow photographs of Ave7ia test 



object, 32 

 Sierp, H., 87, 88, 133-134, 146 

 Simon, S. W., 32 

 Sinapis, 122, 214 

 Skoog, F., 59, 60, 65, 66, 74, 75, 96 



118 

 Small, J., 182-183 

 Snow, R., 75, 103, 118, 122-123. 



200-201, 203-204, 206, 211, 217 

 Soding, H., 16, 32, 37, 56, 57, 58- 



59, 60, 89, 90, 91, 98, 105, 



106, 108-112, 118, 151 

 Soil, absorption of growth substance 



from, 75 

 Soil-culture method, 18 

 Solanum, 164 



(See also Potato) 

 Sonchus, 214 

 Sorghum, 172 

 Source for preparation of growth 



hormone, Absidia, 40 

 Aspergillus, 41 

 Maize oil, malt, etc., 46, 47 

 Rhizopus, 40 

 Urine, 43, 47 

 Specificity of growth substances, 57 

 Stark, P., 12, 22, 23. 24, 37, 56, 57, 



89, 151, 152, 178, 213-214. 215 

 Starhng, E. H., 2, 71 

 Statolith theory of geotropism, 



181-182 



Stocks, 53 



Stomatal movement, 122 



Stoppel, R., 202 



Stormer, I., 64 



Structural formulae of auxin a, b, 

 and heteroauxin, 50, 51 



Strugger, S., 113-115, 195 



Sunflower oil, 47, 63 



{See also Helianthus) 



Surface-tension and growth-sub- 

 stance transport, 78 



Sylven, B., 102 



Symphoricarpos, 37, 59, 60 



Sijringa, 117 



Tammes, P. M. L., 17, 71 

 Taraxacum, 102, 193, 195 

 Taxus, 37 

 Techniques: 



application of agar blocks, 21 

 Boysen Jensen's quantitative 



method, 18, 27-30 

 chloroform extraction, 26 

 culture methods for test objects, 



18-20 

 decapitation of coleoptile, 20, 21 

 ' diffusion of growth substance 



into agar, 25 

 Laibach's lanolin method, 24, 25 

 preparation of auxin c, 43-46 

 preparation of auxin b, 46-47 

 preparation of heteroauxin, 40-42, 



47-50 

 root formation, 126 

 Went's quantitative method, 19, 

 30-32 

 {See also Test methods) 

 Temperature, and formation of 

 growth substance, 64, 66, 204 

 of hormone-test laboratory, 17 

 and transport of growth sub- 

 stance, 74 

 Tendeloo, N., 58 

 Test laboratory, humidity, 17, 23 

 hght, 16 

 light filters, 17 

 temperature, 17, 23 



