## Mapping, combining abilities, heritabilities and heterosis with 4x x 2x crosses in potato |

### From inside the book

Results 1-3 of 10

Page viii

Phenotypic 2n gametic series formed by heterozygous 2x, 2n gamete producer

after

chromatid exchanges), for a two locus model in coupling =f or Ab repulsion

phase = g ...

Phenotypic 2n gametic series formed by heterozygous 2x, 2n gamete producer

after

**double crossovers**, one in region I and one in region II (with randomchromatid exchanges), for a two locus model in coupling =f or Ab repulsion

phase = g ...

Page 16

Although, e must be considered to be twice the m.d. with respect to the

centromere of the distal locus, this will be incorrect ... Thus d represents plp2, or

the number of

crossovers, one ...

Although, e must be considered to be twice the m.d. with respect to the

centromere of the distal locus, this will be incorrect ... Thus d represents plp2, or

the number of

**double crossovers**resulting from two independent singlecrossovers, one ...

Page 22

gametic pool will make possible, first the detection of

second the distinction between FDR and SDR genotypes. 2) In RP, for FDR or

SDR the double recessive 2n gametes are not recovered, even following double

...

gametic pool will make possible, first the detection of

**double crossovers**andsecond the distinction between FDR and SDR genotypes. 2) In RP, for FDR or

SDR the double recessive 2n gametes are not recovered, even following double

...

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### Contents

Genetic Mapping of Three Linked Genes | 34 |

Results | 78 |

Comparisons between 2x FDRCO and 2x FDRNCO | 94 |

2 other sections not shown

### Common terms and phrases

2n eggs 2n gamete formation 2x clones 2x crosses 2x FDR-CO 2x genotypes 2x level 2x parents 4x cultivars 4x progeny 4x x 2x centromere chromosome combining abilities coupling phase cytokinesis depending on frequency diploid distal locus division restitution dominance variance double crossovers double exchange tetrads endosperm epistasis epistatic estimates expressed as map FDR and SDR FDR or SDR form 2n gametes form 2n pollen Frequencies of parental frequency of single gametic series produced GCA variance genotypes in coupling haploid heterosis heterozygosity heterozygous heterozygous loci homozygous linked genes map units marketable tuber yield meiocytes mode of 2n periderm Phureja ploidy polyploidization potato progenies from 4x proximal locus random chromatid exchange repulsion phase rH rH S. J. Peloquin SDR mode SET.I single and double single exchange tetrads Solanum Solanum tuberosum specific gravity Table tetrad analysis tetraploid total tuber yield tuber shape types of 2n unpigmented