SUBJECT INDEX 



189 



Sinapsis (Brassica) sp. (mustard), 4, 



70 

 Sliding carriers, 43 

 Sodium, 



absorption, 59-60, 70, 71, 83, 89, 

 concentrations in, 

 cell saps, 5,11,96,101-2 

 sea water, 11, 153-4 

 soil solutions, 137 

 content of plants, 5 

 effect on rubidium absorption, 58-9 

 excretion, 60,85,101,154 

 requirement of some algae, 7 

 retention by roots, 5, 121 

 Soil, 135-46 

 anion exchange capacity of, 137-8 

 cation exchange capacity of, 138-9 

 solutions, 1 36-7 



Solaniim dulcamara (woody night- 

 shade), 157 

 Solanum tuberosum (potato), 16, 64, 



65-6, 69, 70, 84, 144 

 Solution culture, 6 

 Sources of mineral elements, 2, 6 

 Soya bean {see Glycine max) 

 Spartina townsendii, 160 

 Specific activity, 33 

 Specificity of salt absorption, 10 

 Spinacia oleracea (spinach), 4, 70 

 Staphylococcus, 97 

 Steady state fluxes, 101 

 Stele, 15,117-19 

 Stomata, 49,131,133 

 Stonewort {see Chara ceratophylla) 

 Storage tissues, 16-7, 48, 52-3, 65, 66, 

 68, 77, 78, 80-4, 88-90, 101, 103, 

 128 

 Strontium, 4, 60-2 

 Suaeda maritima (seablite), 1 59 

 Submerged halophytes, 152-5 

 Succinate, 92 

 Succulence, 157-9 

 Sucrose, 67, 1 54 

 Sugar phosphates, 45,75 

 Sugars, 63 

 Sulphate, 



absorption of, 22, 57, 58 



adsorption in soils, 1 38 



circulation in Phaseolus vulgaris, 

 128 



concentration in soil solutions, 1 37 



incorporation into cell structure, 39 



Sulphate — cont. 



influence on salt absorption, 58 



sources of, 141 



transport in xylem, 124 

 Sulphates, 6, 141 

 Sulphides, 141 

 Sulphur, 



an essential element, 6 



content oiZea mays, 3 



functions of, 7 



transport in xylem, 124 

 Surface area, 63, 65-6 

 Surface-volume relations, 65 

 Swede {see Brassica rapa) 

 Symbiosis, 69-70 

 Symplast, 108-9,119,120 

 Synergism, 58, 60, 62 



Tartarate, 140 

 Temperature, 



effects on salt absorption, 47-8 

 Temperature coeflScient (Qio), 



of chemical combination, 38 



of diffusion, 29,30 



of salt uptake, 47-8 

 Terminology, 27 

 Terrestrial halophytes, 155-9 

 Tissue cultures {see callus tissue 



cultures) 

 Titanium, 4 



Tobacco {see Nicotiana tabacum) 

 Tomato {see Lycopersicon esculentum) 

 Tonoplast, 104, 105, 107, 120, 164 

 Torulopsis utilis (yeast), 98 

 Toxicity, of micronutrients, 7 

 Trace elements {see micronutrients) 

 Tracheal sap {see xylem sap) 

 Translocases, 45, 88 

 Translocation of salts, 



from roots, 112-3,122-4 



in phloem, 125-34 

 Transmeability, 28 

 Transpiration, 14, 49, 112-17, 121, 

 122,124,150-1,159 



stream, 9, 10, 122, 128, 165 

 Trifolium sp. (clover), 4 

 Triticum aestivum (wheat), 4, 14, 52, 



78,80,143,144 

 Turgidity, 63, 106, 107 

 Turnip {see Brassica rapa) 



