666 



INDEX 



Neurospora, bread molds 9 



Neutrons 7,9,552 



Nicotiana, tobacco 575,639 



Nitrogen-potassium ratios and 

 nitrogen levels 472 



Nonadditive genetic variance, see 

 Variance 



Nonspecific resistance, see Resist- 

 ance, uniform 



Nonuniform or diverse varieties 

 572 



North American Forestry Commission, 

 Working Party on Forest Tree 

 Improvement, see FAO 



Nucleation, nuclear number, rusts 

 3-5,9,11,434,453 



Nutrition, plants, in relation to 

 rust susceptibility 71,414,449, 

 451,472,491 



Oaks, see-Quercus 



Oats, see Avena 



Obligate parasitism 3,5,8,45,87, 



339,436,468 

 Oldest living tree, Pinus aristata 



from E. Nevada 216 

 Oleoresins 151 

 Oligogenic resistance, see 



Resistance, monogenic 

 Orange mutant, colorless uredio- 



spore walls 8 

 Ornithogalum, star-of-Bethlehem 6 

 Oryza, rice, see also Cultivars, 



rice 551,575,633,639-40 

 Overwintering of rusts on deciduous 



hosts 314,422,425 

 Oxalis corniculata L., creeping 



woodsorrel 11 

 Oxidases 473-74 



Paeonia, peony 316,415 



--emodi Wall., Himalayan peony 154 



Panmixis 310,582 



Parrotiopsis j acquemontiana (Decne.) 



Rehder, Parrotia 154 

 Parrya, Section of genus Pinus 215, 



230-31 

 Parthogenesis 575 

 Patch grafting, see Inoculation, 



patch and Tissue grafting 

 Pathogenic races, see Races 

 Pedigree breeding 484-85 



Penetrance 55,302 



Penicillium, penicillia, mold fungi 



318 

 Pentose-phosphate shunt 87,474 

 Peridermium, aecial stage of numerous 



pine branch and stem rusts 446-62, 

 466-67 

 --fi lament osum Peck., limb rust of 



pines 452-53 

 --harknessii Moore, western gall 



rust 322,445,450-53,467,530,627 

 --indicum Colley § Taylor, aecial 



stage of Cronartium ribicola on 



Pinus griffithii, blue pine blister 



rust 251 

 --pini (Pers.) Lev., syns . P. pini 



(Willd.) Kleb. and P. himalayense 



Bagchee, Scots pine or chir pine 



blister rust 246,302,304,313, 

 315-23,391-92,413-18,445-46,450, 

 452-53,537,567 

 --stalactiforme Arth. d, Kern, 



stalactiform rust 452-53 

 --strobi Kleb., aecial stage of 



Cronartium ribicola in Europe, 



white pine blister rust 132,254 

 Peroxidases 473-74 

 Petroselinum, parsely 639 

 Phelonites lignitum Fres . , a fossil 



rust species on Glyptostrobus 624 

 Phenolics and polyphenols 185,469, 



472-74 

 Phenology and phenological influences 

 165-66,168,171-73,176,199,303, 

 346,436,451-52,575,655 

 Pheonix, date palm 20 

 Phosphatases 473 

 Phosphorylation 469,472 

 Phyllostachys , bamboo 174 

 Physiologic races, see Races, 



general 

 Phytoalexins 465,467,470 

 Phytophthora infestans (Mont.) de 



Bary, potato late blight 9,45-45, 

 49,51-52,55-56,94 

 Picea, spruce 141,168,171-72,174-75, 



583 

 --abies (L.) Karst., syn. P. excelsa 



Link., Norway spruce 101,103-06, 

 115-16,119 

 --jezoensis (Sieb. £ Zucc.) Carr. , 



Yeddo spruce 127,195 

 --morrisonicola Hayata, Taiwan 



spruce 141 

 --obovata Ledeb . , Siberian spruce 

 102 



