Selection Methods in Plant Breeding

Selection Methods in Plant Breeding

by Izak Bos, P. Caligari, I. Bos
     
 

ISBN-10: 0412553309

ISBN-13: 9780412553301

Pub. Date: 08/28/1995

Publisher: Chapman & Hall

Written for plant breeders, researchers and post-graduate students, this book provides a comprehensive review of the methods and underlying theoretical foundations used for selection in plant breeding programmes. The authors review basic elements of population and quantitative genetic theory, and consider in a unique way the tackling of the problems presented by soil

Overview

Written for plant breeders, researchers and post-graduate students, this book provides a comprehensive review of the methods and underlying theoretical foundations used for selection in plant breeding programmes. The authors review basic elements of population and quantitative genetic theory, and consider in a unique way the tackling of the problems presented by soil heterogeniety and intergenotypic competition when selecting quantitative characters.

Product Details

ISBN-13:
9780412553301
Publisher:
Chapman & Hall
Publication date:
08/28/1995
Series:
Plant Breeding Series
Pages:
360
Product dimensions:
6.14(w) x 9.21(h) x 0.88(d)

Related Subjects

Table of Contents

Preface ix

Preface to the 2nd Edition xi

1 Introduction 1

2 Population Genetic Effects of Cross-Fertilization 7

2.1 Introduction 7

2.2 Diploid Chromosome Behaviour and Panmixis 10

2.2.1 One Locus with Two Alleles 10

2.2.2 One Locus with more than Two Alleles 15

2.2.3 Two Loci, Each with Two Alleles 16

2.2.4 More than Two Loci, Each with Two or more Alleles 26

2.3 Autotetraploid Chromosome Behaviour and Panmixis 28

3 Population Genetic Effects of Inbreeding 33

3.1 Introduction 33

3.2 Diploid Chromosome Behaviour and Inbreeding 37

3.2.1 One locus with two alleles 37

3.2.2 A pair of linked loci 41

3.2.3 Two or more unlinked loci, each with two alleles 49

3.3 Autotetraploid Chromosome Behaviour and Self-Fertilization 52

3.4 Self-Fertilization and Cross-Fertilization 56

4 Assortative Mating and Disassortative Mating 59

4.1 Introduction 59

4.2 Repeated Backcrossing 63

5 Population Genetic Effect of Selection with regard to Sex Expression 69

5.1 Introduction 69

5.2 The Frequency of Male Sterile Plants 71

5.2.1 Complete seed-set of the male sterile plants 72

5.2.2 Incomplete seed-set of the male sterile plants 73

6 Selection with Regard to a Trait with Qualitative Variation 77

6.1 Introduction 77

6.2 The Maintenance of Genetic Variation 84

6.3 Artificial Selection 87

6.3.1 Introduction 87

6.3.2 Line selection 91

6.3.3 Full sib family selection 94

6.3.4 Half sib family selection 98

6.3.5 Mass selection 101

6.3.6 Progeny testing 104

7 Random Variation of Allele Frequencies 107

7.1 Introduction 107

7.2 The Effect of the Mode of Reproduction of the Probability of Fixation 115

8 Components of the Phenotypic Value of Traitswith Quantitative Variation 119

8.1 Introduction 119

8.2 Components of the Phenotypic Value 131

8.3 Components of the Genotypic Value 137

8.3.1 Introduction 137

8.3.2 Partitioning of Genotypic Values According to the F&infty;-Metric 139

8.3.3 Partitioning of Genotypic Values into their Additive Genotypic Value and their Dominance Deviation 151

8.3.4 Breeding Value: A Concept Dealing with Cross-Fertilizing Crops 168

9 Effects of the Mode of Reproduction on the Expected Genotypic Value 173

9.1 Introduction 173

9.2 Random Mating 176

9.3 Self-Fertilization 179

9.4 Inbreeding Depression and Heterosis 184

9.4.1 Introduction 184

9.4.2 Hybrid Varieties 191

9.4.3 Synthetic Varieties 197

10 Effects of the Mode of Reproduction on the Genetic Variance 205

10.1 Introduction 205

10.2 Random Mating 206

10.2.1 Partitioning of σg2 in the case of open pollination 210

10.2.2 Partitioning of σg2 in the case of pairwise crossing 215

10.3 Self-Fertilization 217

10.3.1 Partitioning of σg2 in the case of self-fertilization 219

11 Applications of Quantitative Genetic Theory in Plant Breeding 225

11.1 Prediction of the Response to Selection 225

11.2 The Estimation of Quantitative Genetic Parameters 243

11.2.1 Plant Material with Identical Reproduction 245

11.2.2 Cross-fertilizing Crops 249

11.2.3 Self-fertilizing Crops 254

11.3 Population Genetic and Quantitative Genetic Effects of Selection Based on Progency Testing 257

11.4 Choice of Parents and Prediction of the Ranking of Crosses 266

11.4.1 Plant Material with Indentical Reproduction 271

11.4.2 Self-fertilizing Plant Material 273

11.5 The Concept of Combining Ability as Applied to Pure Lines 277

11.5.1 Introduction 277

11.5.2 General and Specific Combining Ability 279

12 Selection for Several Traits 289

12.1 Introduction 289

12.2 The Correlation Between the Phenotypic or Genotypic Values of Traits with Quantitative Variation 291

12.3 Indirect Selection 294

12.3.1 Relative selection efficiency 295

12.3.2 The use of markers 299

12.3.3 Selection under Conditions Deviating from the Conditions Provided in Plant Production Practice 307

12.4 Estimation of the Coefficient of Phenotypic, Environmental, Genetic or Additive Genetic Correlation 311

12.5 Index Selection and Independent-Culling-Levels Selection 318

13 Genotype x Environment Interaction 325

13.1 Introduction 325

13.2 Stability Parameters 329

13.3 Applications in Plant Breeding 333

14 Selection with Regard to a Trait with Quantitative Variation 339

14.1 Disclosure of Genotypic Values in the Case of A Trend in the Quality of the Growing Conditions 339

14.2 Single-Plant Evaluation 341

14.2.1 Use of Plants Representing a Standard Variety 343

14.2.2 Use of Fixed Grids 343

14.2.3 Use of Moving Grids 348

14.3 Evaluation of Candidates by Means of Plots 355

14.3.1 Introduction 355

14.3.2 Use of Plots Containing a Standard Variety 359

14.3.3 Use of Moving Means 367

15 Reduction of the Detrimental Effect of Allocompetition on the Efficiency of Selection 381

15.1 Introduction 381

15.2 Single-Plant Evaluation 389

15.2.1 The Optimum Plant Density 393

15.2.2 Measures to Reduce the Detrimental Effect of Allocompetition 394

15.3 Evaluation of Candidates by Means of Plots 398

16 Optimizing the Evaluation of Candidates by means of Plots 405

16.1 The Optimum Number of Replications 405

16.2 The Shape, Positioning and Size of the Test Plots 410

16.2.1 General considerations 410

16.2.2 Shape and Positioning of the Plots 413

16.2.3 Yardsticks to Measure Soil Heterogeneity 414

16.2.4 The Optimum Plot Size from an Economic Point of View 419

17 Causes of the Low Efficiency of Selection 421

17.1 Correct Selection 424

18 The Optimum Generation to Start Selection for Yield of a Self-Fertilizing Crop 429

18.1 Introduction 429

18.2 Reasons to Start Selection for Yield in an Early Generation 430

18.3 Reasons to Start Selection for Yield in an Advanced Generation 433

19 Experimental Designs for the Evaluation of Candidate Varieties 437

References 445

Index 457

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