450 INTRODUCTION TO EMBRYOLOGY OF ANGIOSPERMS 



food reserves, 162 



germination of, 181, 380 



shedding stage of, 164 



viability of, 24, 181, 376 

 Pollen -embryo sacs, 172, 174 

 Pollen tubes, branching of, 182, 189, 210 



bursting of, 375 



callose plugs in, 181 



coiling of, 174, 193 



colored bodies in 161 



course of, 183 



discharge of, into embryo sac, 189 



discovery of, 3 



entry of, into embryo sac, 188 



function of, 197 



haustorial function of, 209 



number of, per embryo sac, 203 



persistence of, 209 



rate of growth of, 190 

 Pollinium, 48, 157, 182 

 Polyembryony, 14, 15, 343 

 Polygonatum, 164, 166, 204 

 Polygonum, 12, 59, 61, 84 

 Polygonum type of embryo sac, 87 

 Polyploidy, 205 



Polysiphonous pollen grains, 181 

 Polyspermy, 202 

 Polyspory, 46 

 Populus, 56 

 Porogamy, 183 

 Porsch's theory, 414, 415 

 Portulaca, 3, 4, 140, 141, 164, 189, 191 

 Potamogeton, 36 

 Potentilla, 78, 90, 331 

 Primary endosperm nucleus, 207 

 Primula, 223, 226 



Production of adventive embryos, 393 

 Prothallial cells, 412 

 Prunus, 381, 386, 388 

 Pseudoembryo sac, 104, 221 

 Pseudoembryos, 395, 396 

 Pseudogamy, 334 

 Pseudohomotypic division, 319, 320, 326, 



327, 331 

 Pseudotsuga, 421 

 Psychotria, 140, 256 

 Putoria, 78, 134, 135 



Q 



Quamoclit, 39 



Quercus, 190 

 Quisgualis, 59, 60, 186 



R 



Rafflesia, 220, 305 



Ramondia, 208 



Ranunculus, 31, 39, 54, 223, 305, 306, 



327, 332, 429 

 Raphanus, 3S3 

 Raphide in embryo sac, 141 

 Rate of growth of pollen tube, 190 

 Receptivity of stigma, 377 

 Recurrent apomixis, 319 

 Relationships between different types of 



endosperm, 252 

 Reseda, 90, 181 

 Restio, 269 

 Restitution nucleus, 46, 319, 323, 324, 



326, 327, 331 

 Rhipsalis, 362, 363 

 Rhus, 185 

 Ribes, 382 

 Richardsonia, 140 

 Ricinus, 2, 257 

 Rosa, 76, 77 

 Rosularia, 77, 78 

 Rubia, 62, 112 



Rudbeckia, 118, 134, 136, 333, 334, 346 

 Ruellia, 232, 235-237 

 Ruppia, 71 

 Ruta, 271 



S 



Saccharum, 138, 181, 377 



Sagina, 282, 283, 288 



Sagiltaria, 35, 201, 203, 205, 248, 288, 289 



Salix, 183 



Salpiglossis, 400 



Salsola, 169 



Salvia, 32, 35, 291 



Sambucus, 122, 156 



Sandoricum, 89, 91 



Sansevieria, 29, 37 



Santalum, 64 



Saponaria, 229 



Sarcococca, 335, 337 



Sarcocolla, 110 



