186 



SUBJECT INDEX 



Malus sylvestris (apple), 16, 124-5, 



131 

 Manganates, 6 

 Manganese, 



absorption of, 16 



an essential element, 6 



content of Zea mays, 3 



precipitation in soils, 146 



toxicity, 146 

 Mangold (see Brassica rapa) 

 Marine halophytes, 152,155 

 Marsh samphire {see Salicornia spp.) 

 Mass flow, 9, 30-2, 47, 57, 117, 123 

 Melilotus sp., 70 

 Membranes, 8, 10, 32-3, 104-5, 106 



transport across, 31 

 Mentha spp. {mmi), 2 

 Meristem, 15 

 Meristematic cells, 18, 19, 68, 104, 



106 

 Metabolic absorption, 47 



binding, 98 



inhibitors, 64,91,92,132 

 Metabolism, 11-2,63-5,68,73-93 

 Metaxylem, 15 

 Methylene blue, 38 

 Michaehs constant, 45 

 Microchemical tests, 22 

 Micronutrients, 



absorption of, 130, 146 



functions of, 8 



list of, 6 



toxicity of, 7 

 Micro-organisms, 7, 18, 19, 65, 68, 



75, 98, 103, 140 

 Millet {see Panicum miliaceiim) 

 Mineral salts, 



content of plants, 3-5 



functions of, 5-8 

 Mint {see Mentha sp.) 

 Mitochondria, 19, 21, 106, 107, 120 



164 

 Mnium punctatiim, 104 

 Molecular sieve hypothesis, 1 

 Molybdates, 6, 146 

 Molybdenum, 6, 7 

 Montmorillonite clays, 142 

 Mosses, 133 



Multicellular algae, 18-9, 49-50, 60 

 Mustard {see Sinapsis {Brassica) sp.) 

 Mycelial fungi, 20-1 

 Mycorrhiza, 21,70 



Myriophylluni spp. , 155 

 Myxomycetes, 104 



N 



Nicotiana tabacum (tobacco), 15, 69, 



70 

 Nitella spp., 11, 52, 95-6, 102, 106, 



108 

 Nitellopsis obtusa, 101-2 



Nitrate, 



absorption of, 22, 52-4, 56-7, 63, 

 78,80,113,116,140 



concentration in soil solutions, 137 



importance as a plant nutrient, 3 



influence on salt absorption, 58 



incorporation into cell constituents, 



39 

 Nitrogen, 



an essential element, 6 



compounds in xylem sap, 124-5 



content of Zea mays, 3 



fixation, 7, 140 



functions of, 7 



sources of, 2 

 Nitzschia closterium, 50, 84 

 Non-exchangeable ions, 



in plants, 101-3 



in soils, 138-9 

 Non-free space, 101 

 Nucleic acids {see also ribonucleic 



acid), 39, 87, 88, 140 

 Nucleolus, 19 

 Nucleus, 19, 21 



O 



Oat (see Arena spp.) 

 Oil glands, 162 

 Onion (see Allium cepa) 

 Orange G, 38 

 Organ culture, 14 

 Organic acids, 139 



accumulation of, 52 



metabolism of, 90-2 

 Oryzasativa (nee), 51-2 

 Oscillation volume, 142 

 Osmosis, 10, 120 

 Osmotic efl"ects, 63 

 Osterhout hypothesis, 76 



model, 40-1 

 Outer space (= water free space), 97 

 Oxidative phosphorylation, 106 



