Histopathology of Seed-Borne Infections - Applied Research Center ...

Recommendations

Info

Location of Fungal Hyphae in Seeds 113ABscendCembDE F GFIGURE 5.6 Histopathology of Albugo candida-infected Brassica juncea seeds. A, Infectedsymptomatic seeds with white crust on seed surface. B, C, Cleared whole-mount preparationsof epidermis and cotyledon, respectively, showing mycelium and oospores. D, E, Ls part ofbold-discolored seed with mycelium and oospore in seed coat with slight increase in numberof its layers. F, A part of mature seed coat magnified to show oogonium and antheridium.G, Ls part of shriveled discolored seed showing abundant mycelium and oospores in seedcoat. (Abbreviations: emb, embryo; end, endosperm; sc, seed coat.) (Sharma, J., Agarwal, K.,and Singh, D. 1997. J. Phytol. Res. 10: 25–29.)Singh, 1997). The seed-borne mycelium and oospores remain viable and can causeseedling infection (Sharma, Agarwal, and Singh, 1994).5.5.2 ASCOMYCETESTable 5.3 gives an account of Ascomycetes in seeds of crop plants.5.5.2.1 ProtomycesProtomyces macrosporus is the most widespread species causing discoloration andgall formation on members of the Apiaceae (Umbelliferae). Coriandrum sativum is
114 Histopathology of Seed-Borne InfectionsTABLE 5.3Infection of Ascomycetes and Basidiomycetes in Seeds of Crop PlantsPathogenHostPart(s) of Seedand FruitImportantReferencesProtomycesmacrosporusAscomycetesCoriandrum sativum Persistent calyx,stylopodium, pericarp,carpophoreGupta, 1962; Rao, 1972;Pavgi andMukhopadhyay, 1972;Singh et al., 2001Claviceps fusiformis Pennisetum typhoides Seed sclerotia Prakash et al., 1980;Roy, 1984C. paspali Paspalum dilatatum Seed sclerotia Luttrell, 1977C. purpurea Secale secale, Triticum Seed sclerotia Campbell, 1958aestivum, HordeumvulgareDidymella bryoniae Cucurbita pepo Seed coat, embryo Lee, Mathur, andNeergaard, 1984D. lycopersici Lycopersicum Seed coat Fischer, 1954esculentumHelianthus annuus Pericarp, testa Tollenaar and Bleiholder,1971SclerotiniasclerotiorumEruca sativa Seed coat Sharma, 1992BasidiomycetesMelanopsichiumeleusinisEleusine coracana Seed cavity Thirumalachar andMundkur, 1947TolyposporiumpanicillariaePennisetum typhoides Affects all parts exceptpericarpBhat, 1946; Mitter andSiddiqui, 1995Ustilago tritici Triticum aestivum Pericarp, endosperm,embryoBatts, 1955; Popp, 1959;Ohms and Bever, 1956Ustilago nuda Hordeum vulgare Pericarp, endosperm, Malik and Batts, 1960aembryoTilletia controversa Triticum aestivum Colonizes developing Mathur and Cunfer, 1993ovary, affects all partswithin pericarpT. indica(Neovossia indica)Triticum aestivum Partial or completeinfection, all partsGoates, 1988; Cashion andLuttrell, 1988except aleurone layerand pericarpT. laevis (T. foetida) Triticum aestivum Colonizes ovary, affects Singh, 1991all parts except pericarpT. tritici (T. caries) Triticum aestivum Colonizes ovary, affectsall parts except pericarpMathur and Cunfer, 1993Puccinia calcitrapaevar. centaureae(P. carthami)Carthamus tinctoriusUredospore andteleutospore infestationof seed surfaceUromyces betae Beta vulgaris Uredospores in seedballsHalfon-Meiri, 1983Alcock, 1931
Page 2 and 3:
Histopathology ofSeed-Borne Infecti
Page 4:
PrefaceThe book deals with only one
Page 8 and 9:
The AuthorsDalbir Singh, Ph.D., for
Page 10 and 11:
ContentsChapter 1 Introduction ....
Page 12 and 13:
4.3.2 Routes for Infection from Ova
Page 14:
8.4 Survival in Seed ..............
Page 17 and 18:
2 Histopathology of Seed-Borne Infe
Page 19 and 20:
4 Histopathology of Seed-Borne Infe
Page 22 and 23:
2Reproductive Structuresand Seed Fo
Page 24 and 25:
Reproductive Structures and Seed Fo
Page 26:
Page 29 and 30:
14 Histopathology of Seed-Borne Inf
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 56 and 57:
Page 58 and 59:
Page 60 and 61:
Page 62 and 63:
3Structure of SeedsThe seed habit i
Page 64 and 65:
Structure of Seeds 49(1971) of usin
Page 66 and 67:
Structure of Seeds 51is found in as
Page 68 and 69:
Structure of Seeds 53dry seed of Ly
Page 70 and 71:
Structure of Seeds 553.3.2 SEED COA
Page 72 and 73:
Structure of Seeds 57Endosperm: One
Page 74 and 75:
Structure of Seeds 59scendembepsmuA
Page 76 and 77:
Structure of Seeds 61Endosperm: Sca
Page 78 and 79: Structure of Seeds 63Chalaza simple
Page 80 and 81: Structure of Seeds 65stystypmerA Bc
Page 82 and 83: Structure of Seeds 67epsent endCADB
Page 84 and 85: Structure of Seeds 69perhscendembpe
Page 86 and 87: Structure of Seeds 71eposgepi′epo
Page 88 and 89: Structure of Seeds 73(Zea and Sorgh
Page 90 and 91: Structure of Seeds 75Baker, D.M. an
Page 92 and 93: Structure of Seeds 77Maheshwari Dev
Page 94: Structure of Seeds 79Vries, M.A. de
Page 97 and 98: 82 Histopathology of Seed-Borne Inf
Page 115 and 116: 100 Histopathology of Seed-Borne In
Page 127: 112 Histopathology of Seed-Borne In
Page 163 and 164: TABLE 5.6Location of Mycelium of St
Page 179 and 180:
164 Histopathology of Seed-Borne In
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 214 and 215:
7Seed Infection by VirusesViruses a
Page 216 and 217:
Seed Infection by Viruses 201TABLE
Page 218 and 219:
Page 220 and 221:
Seed Infection by Viruses 205Unlike
Page 222 and 223:
Seed Infection by Viruses 2073. The
Page 224 and 225:
Seed Infection by Viruses 209Wilcox
Page 226 and 227:
Page 228 and 229:
Seed Infection by Viruses 213floret
Page 230 and 231:
Seed Infection by Viruses 215ptowvv
Page 232 and 233:
Seed Infection by Viruses 2177.4.2
Page 234 and 235:
Seed Infection by Viruses 219seed(s
Page 236 and 237:
Seed Infection by Viruses 221AMV fo
Page 238 and 239:
Seed Infection by Viruses 223REFERE
Page 240 and 241:
Seed Infection by Viruses 225Hunter
Page 242:
Seed Infection by Viruses 227Wolf,
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297:
show all

Histopathology of Seed-Borne Infections - Applied Research Center ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?