Inheritance of insensitivity of lettuce to a surplus of exchangeable manganese in steam-sterilized soils |
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Authors: | A. H. Eenink F. Garretsen |
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Affiliation: | (1) Institute for Horticultural Plant Breeding (IVT), Wageningen, the Netherlands |
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Abstract: | Summary After steam sterilizing of certain glasshouse soils a surplus of exchangeable manganese (SEM) occurs. Great differences exist between lettuce genotypes for sensitivity to SEM.Research on the inheritance of insensitivity was carried out by intererossing five lettuce genotypes: Lactuca sativa cys. Neptune (sensitive). Plenos. Troppo and Celtuce (all insensitive) and an accession of L. scrriola (insensitive). From analysing various populations (as F1's. F2's and B1's) it appeared that different numbers of genes for insensitivity were present in the parents varying from one gene in Plenos and Troppo, two genes in L. serriola to possibly four genes in Celtuce. Genes in the three first mentioned parents were linked in repulsion phase and a chromosome map for these genes was made. |
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Keywords: | Lactuca sativa lettuce Lactuca serriola wild lettuce linkage recombination frequency incomplete duplicate epistatic action chromosome map manganese toxicity |
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