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Horticulture Principles and Practices

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5.3 PLANT GROWTH PROCESSES 160<br />

5.4 DEVELOPMENTAL STAGES OF GROWTH 170<br />

5.5 PHASES IN THE PLANT LIFE CYCLE 172<br />

5.6 PLANT HORMONES 178<br />

5.7 NONPATHOGENIC (PHYSIOLOGICAL) PLANT DISORDERS 180<br />

Summary 182<br />

References <strong>and</strong> Suggested Reading 183<br />

Practical Experience 183<br />

Outcomes Assessment 184<br />

Chapter 6 BREEDING HORTICULTURAL PLANTS 185<br />

PURPOSE AND EXPECTED OUTCOMES 185<br />

OVERVIEW 185<br />

6.1 WHAT IS PLANT BREEDING? 186<br />

6.2 THE ART AND SCIENCE OF PLANT BREEDING 186<br />

6.3 THE CONCEPT OF GENETIC MANIPULATION 187<br />

INDUSTRY HIGHLIGHT:APPLICATION OF TISSUE CULTURE IN MODERN<br />

GENETIC IMPROVEMENT OF DAYLILY (HEMEROCALLIS SP.) 188<br />

6.4 REVIEW OF GENERAL GENETIC PRINCIPLES 196<br />

6.5 BRIEF REVIEW OF MENDELIAN GENETICS 196<br />

6.6 COMPLEX INHERITANCE 197<br />

6.7 THE IMPORTANCE OF REPRODUCTIVE SYSTEMS 198<br />

6.8 ROLE OF VARIATION IN PLANT BREEDING 199<br />

6.9 THE PLANT BREEDER AS A DECISION MAKER 199<br />

6.10 GENERAL STEPS IN A BREEDING PROGRAM 200<br />

6.11 SELECTION IN BREEDING 200<br />

6.12 HYBRIDIZATION IN PLANT BREEDING 201<br />

6.13 METHODS OF BREEDING 201<br />

6.14 BREEDING HYBRIDS 202<br />

6.15 CULTIVAR RELEASE AND CERTIFICATION 202<br />

6.16 BREEDING ASEXUALLY PROPAGATED SPECIES 203<br />

6.17 BREEDING SEEDLESS FRUITS 203<br />

6.18 BIOTECHNOLOGY IN PLANT BREEDING 204<br />

6.19 BREEDING GENETICALLY MODIFIED CULTIVARS 205<br />

6.20 USE OF MARKERS IN PLANT BREEDING 205<br />

6.21 SUCCESS OF GENETIC ENGINEERING OF PLANTS 206<br />

6.22 THE BIOTECHNOLOGY DEBATE 206<br />

6.23 TISSUE CULTURE IN PLANT BREEDING 207<br />

Summary 208<br />

References <strong>and</strong> Suggested Reading 209<br />

Practical Experience 209<br />

Outcomes Assessment 209<br />

PART 2 PROTECTING HORTICULTURAL PLANTS 211<br />

Chapter 7 BIOLOGICAL ENEMIES OF HORTICULTURAL PLANTS 213<br />

PURPOSE AND EXPECTED OUTCOMES 213<br />

OVERVIEW 213<br />

Module 1: Plants as Pests 214<br />

7.1 WEEDS 214<br />

7.2 PARASITIC PLANTS 216<br />

Contents<br />

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