Tropical root and tuber crops : cassava, sweet potato, yams and aroids

CONTENTS......Page 5
ACRONYMS AND ABBREVIATIONS......Page 13
PREFACE......Page 15
SECTION I: CASSAVA......Page 21
Domestication......Page 23
Discovery of the Crop by Western Explorers......Page 27
Present Geographical Distribution......Page 29
Classification......Page 33
Morphological Description of M. esculenta Crantz......Page 34
Related Species......Page 38
Cytology......Page 39
Objectives and Selection Criteria......Page 41
Sexual Reproduction and Sterility......Page 42
Crossing Techniques and True Seed Production......Page 43
Selection Methods and Programmes......Page 45
Heritability of Major Traits......Page 48
Genotype × Environment Interactions......Page 51
Use of Related Species......Page 52
Rapid Vegetative Propagation......Page 53
Use of Molecular Markers......Page 55
Transgenic Technologies......Page 56
Germplasm Conservation......Page 57
Growth Cycle......Page 59
Temperature......Page 64
Nutrition......Page 65
Water Deficit and Stress......Page 66
Yield Potential......Page 67
Soil Preparation......Page 69
Propagule Selection and Preparation......Page 70
Plant Densities and Crop Establishment......Page 72
Intercropping......Page 74
Weeding......Page 76
Fertilization and Nutrient Disorders......Page 77
Harvesting......Page 80
Pests......Page 83
Bacteria......Page 87
Fungi......Page 89
Viruses......Page 91
Integrated Pest and Disease Management......Page 95
Chemical Composition......Page 97
Physiological Disorders in Freshly Stored Roots......Page 98
Marketing and Quality Standards......Page 100
Storage Methods......Page 101
Traditional Processing Techniques......Page 103
Industrial Processing......Page 105
SECTION II: SWEET POTATO......Page 109
Domestication......Page 111
Discovery of the Crop by Western Explorers......Page 113
Present Geographical Distribution......Page 117
Morphological Description of Ipomoea batatas (L.) Lam......Page 119
Related Species......Page 122
Cytology......Page 124
Objectives and Selection Criteria......Page 127
Sexual Reproduction, Incompatibility and Sterility......Page 128
Crossing Techniques and True Seed Production......Page 130
Selection Methods and Programmes......Page 131
Heritability of Major Traits......Page 135
Genotype × Environment Interactions......Page 138
Use of Related Species......Page 139
Rapid Vegetative Propagation......Page 140
Use of Molecular Markers......Page 142
Transgenic Technologies......Page 143
Germplasm Conservation......Page 145
Growth Cycle......Page 147
Photoperiodism......Page 150
Temperature......Page 151
Nutrition......Page 153
Water Deficit and Stress......Page 154
Yield Potential......Page 156
Soil Preparation......Page 159
Propagule Selection and Preparation......Page 160
Plant Densities and Crop Establishment......Page 162
Intercropping......Page 163
Weeding......Page 164
Fertilization and Nutrient Disorders......Page 165
Harvesting......Page 169
Pests......Page 171
Nematodes......Page 176
Bacteria......Page 178
Fungi......Page 180
Viruses......Page 183
Integrated Pest and Disease Management......Page 185
Chemical Composition......Page 187
Marketing and Quality Standards......Page 191
Storage Methods......Page 192
Traditional Processing Techniques......Page 194
Industrial Processing......Page 197
SECTION III: YAMS......Page 201
Domestication......Page 203
Discovery of the Crop by Western Explorers......Page 207
Present Geographical Distribution......Page 208
Classification......Page 211
Morphological Description of Major Cultivated Dioscorea spp.......Page 213
Related Species......Page 226
Cytology......Page 227
Objectives and Selection Criteria......Page 231
Sexual Reproduction and Sterility......Page 233
Crossing Techniques and True Seed Production......Page 234
Selection Methods and Programmes......Page 236
Heritability of Major Traits......Page 238
Genotype × Environment Interactions......Page 239
Use of Related Species......Page 240
Rapid Vegetative Propagation......Page 241
Use of Molecular Markers......Page 243
Transgenic Technologies......Page 245
Germplasm Conservation......Page 246
Growth Cycle......Page 249
Photoperiodism......Page 252
Nutrition......Page 255
Water Deficit and Stress......Page 256
Yield Potential......Page 257
Soil Preparation......Page 259
Propagule Selection and Preparation......Page 261
Plant Densities and Crop Establishment......Page 263
Weeding......Page 266
Fertilization and Nutrient Disorders......Page 268
Harvesting......Page 270
Pests......Page 273
Nematodes......Page 274
Fungi......Page 276
Viruses......Page 280
Integrated Pest and Disease Management......Page 283
Chemical Composition......Page 285
Physiological Disorders in Freshly Stored Tubers......Page 288
Marketing and Quality Standards......Page 289
Storage Methods......Page 290
Traditional Processing Techniques......Page 292
Industrial Processing......Page 294
SECTION IV: AROIDS......Page 297
Domestication......Page 299
Discovery of the Crop by Western Explorers......Page 301
Present Geographical Distribution......Page 302
Classification......Page 305
Morphological Descriptions of Major Aroids......Page 306
Cytology......Page 318
Objectives and Selection Criteria......Page 321
Sexual Reproduction and Sterility......Page 322
Crossing Techniques and True Seed Production......Page 323
Selection Methods and Programmes......Page 326
Heritability of Major Traits......Page 328
Genotype × Environment Interactions......Page 329
Polyploidy Breeding......Page 331
Rapid Vegetative Propagation......Page 332
Use of Molecular Markers......Page 333
Germplasm Conservation......Page 335
Growth Cycle......Page 339
Photoperiodism......Page 342
Temperature......Page 343
Nutrition......Page 344
Water Deficit and Stress......Page 345
Yield Potential......Page 346
Soil Preparation......Page 349
Propagule Selection and Preparation......Page 350
Plant Densities and Crop Establishment......Page 351
Weeding......Page 353
Fertilization and Nutrient Disorders......Page 354
Harvesting......Page 356
Pests......Page 359
Nematodes......Page 362
Fungi......Page 363
Viruses......Page 368
Integrated Pest and Disease Management......Page 369
Chemical Composition......Page 371
Marketing and Quality Standards......Page 374
Storage Methods......Page 375
Traditional Processing Techniques......Page 377
Industrial Processing......Page 378
REFERENCES......Page 381
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Z......Page 433