Parasites and pathogens see (27)--364; (28)--388; (29)--405; (30)--433
Parasitic species and growth (17)--243
    Aphanomyces astaci (17)--252
    Aphanomyces cochlioides (17)--248
        chemical parameters (17)--248
        physical parameters (17)--250
    Aphanomyces euteiches (17)--243
        antibiotics and toxic compounds (17)--246
        chemical parameters, carbon and nitrogen (17)--243
        isoflavonoid phytoalexins (17)--246
        mineral nutrition (17)--245
        other chemicals (17)--247
        oxygen (17)--248
        physical parameters (17)--248
        sulfur nutrition (17)--245
        vitamins (17)--246
    Aphanomyces raphani (17)--250
    Aphanomyces sp. (17)--251
    saprolegniosis (17)--253
        nutrition (17)--253
        other chemical factors (17)--254
        physical parameters (17)--256
Periodicity, general trends (5)--75
    in soil and sediments (5)--81
Pheromone see (21)--297
Phragmosporangium (46)--769
    uniseriatum (46)--769
Phylogeny and evolution (25)--346
    biochemical phylogeny (25)--451
        biosynthesis patterns (25)--353
        nucleotide patterns (25)--355
        nutritional parameters (25)--351
        wall chemistry patterns (25)--352
    infrafamilial phylogeny (25)--357
    morphological phylogeny (25)--347
        algal ancestry (25)--347
        flagellate or heterotroph ancestry (25)--349
    ultrastructural phylogeny (25)--355
Physical environment and growth (16)--240
    oxygen and other factors (16)--241
    temperature and pH (16)--240
Physiology of reproduction (18)--257
    general role of nutrition (18)--257
    hormonal (21)--297
        antheridiol (21)--299
        branching and cellulase production (21)--300
        hormone control (21)--296
    interthallic antheridiol reactions (21)--308
    oogoniol (2l)--309
    pheromone (hormone)concept (21)—297
    production of antheridiol (21)--305
    protein and RNA synthesis (21) --302
    stereochemistry of antheridiol (21)--307
    summary (2l)--311
    ultrastructure of antheridiol induction (21)--308
Plectospira (40)--673
    gemmifera (40)--673
    myriandra (40)--673
    sp. (40)--673
Preservation of cultures (2)--28
Protoachlya (37)--586
    excluded taxon (37)--598
    key to species (37)--586
    species of (37)--587 et sqq.
    benekei (37)--591
    hypogyna (37)--588
    mucronata (37)--596
    paradoxa (37)--587
    parasitica (37)--598
    polyspora (37)--593
    sp. (37)--598
Pythiopsis (36)--576
    excluded taxa (36)--585
    key to species (36)--576
    species of (36)—577 et sqq.
        cymosa (30)--577
        humphreyana (30)--579
        intermedia (36)--579
        irregularis (36)--582
        papillata (36)--585
        papilliformis (30)--583
        sp. Kobayasi and Konno (36)--585
        terrestris (36)--585


Quadrat-defined soilst distribution in (4)--67