Mapping, Combining Abilities, Heritabilities and Heterosis with 4x X 2x Crosses in PotatoHalf-tetrad analysis with linked genes in tetraploids. Genetic mapping of three linked genes for tuber shape and eye color in potato. Combining ability variances, heritabilities and heterosis for tuber yields and specific gravity of 4x progeny form 4x x 2x crosses in potato. |
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Page 8
... homozygous recessive genotype produces 2n eggs along with haploid eggs . They were able to map the following loci with respect to the centromere , the wx and sh loci on chromosome 9 , the 1g2 and al loci on chromosome 3 , and the ws3 ...
... homozygous recessive genotype produces 2n eggs along with haploid eggs . They were able to map the following loci with respect to the centromere , the wx and sh loci on chromosome 9 , the 1g2 and al loci on chromosome 3 , and the ws3 ...
Page 43
... homozygous for the [ Ro ] locus and thus have the [ Ro / Ro ] genotype . For the four 2x FDR - NCO clones , we cannot distinguish between homozygous ( Ro / Ro ) and heterozygous [ Ro / ro ] genotypes , since crossing - over does not ...
... homozygous for the [ Ro ] locus and thus have the [ Ro / Ro ] genotype . For the four 2x FDR - NCO clones , we cannot distinguish between homozygous ( Ro / Ro ) and heterozygous [ Ro / ro ] genotypes , since crossing - over does not ...
Page 56
... homozygous dominant for the proximal locus and segregating for the distal gene [ D ] , and the FDR - CO males with the two genes in coupling phase . Repeating the same calculations but now using the formula in Table 9 ( Expected Gametic ...
... homozygous dominant for the proximal locus and segregating for the distal gene [ D ] , and the FDR - CO males with the two genes in coupling phase . Repeating the same calculations but now using the formula in Table 9 ( Expected Gametic ...
Contents
TABLE OF CONTENTS | 3 |
LIST OF FIGURES | 6 |
Methods and Assumptions | 10 |
13 other sections not shown
Common terms and phrases
2arcsin 2n gamete formation 2x crosses 2x FDR 2x FDR-CO 4x cultivars 4x parents 4x progeny 4x x 2x addition analysis breeding calculated centromere chromosome clones combining abilities compared correlations crossovers diploid distal locus division dominant double effects estimates expected expressed families FDR and SDR females field five four frequency of single GCA variance genes genetic genotypes Hancock haploid heritability heterozygous hybrids involved Lennon linked loci males map units marketable tuber yield matings mean mode of 2n observed obtained Ov+L Ro Ov+L oval parents Peloquin pigmentation plant possible potato probability produced progenies from 4x proximal locus ps/ps random ratio region respectively Ro Ov+L Ro round selection significant single exchange tetrads specific gravity sprouts studies Table tetraploid total tuber yield traits Trial tuber shape Tuberosum types unpigmented variance weight