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Allozyme variation and inheritance in leaves of Populus deltoides, Populus nigra, Populus maximowiczii and Populus X canadensis in comparison to those in root tips



Allozyme variation and inheritance in leaves of Populus deltoides, Populus nigra, Populus maximowiczii and Populus X canadensis in comparison to those in root tips



Silvae Genetica 41(4-5): 289-292



Methods for extraction and electrophoresis of leaf tissue enzymes in Populus deltoides MARSH., P. nigra L., P. maximowiczii, HENRY, and P. times canadensis MOENCH are described. Eleven enzymes were assayed in 54 individual clones of these poplars, and in progeny and parents of seven controlled crosses of P. deltoides with P. deltoides, P. nigra, and P. maximowiczii. 10 of these enzymes were analysed earlier in root tips of the same individuals. In addition, colorimetric esterase was analysed. A total of 33 genes coding for 11 enzyme systems were observed. 87% to 91% of the genes expressed in leaf tissue of the 3 Populus species and one interspecific hybrid were also expressed in root tips. Allozymes of 26 loci expressed identically in leaves and root tips. Four loci, Per-1, Per-2, Per-3, and Sdh-2 that expressed in root tips of the Populus species, however were not detected in leaf tissue. In addition, 2 peroxidase loci Per-L1, and Per-L2, were detected only in leaves. Single-gene control was observed for isozyme variants of each of the 4 enzyme zones (CE-1, CE-2, PER-L1, PER-L2) investigated or detected only in leaves. Allozymes in one species were allelic to allozymes in other species at 16 loci. Populus deltoides, P. nigra, and P. maximowczii could be differentiated by isozymes of Ce-1 in leaves.

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Accession: 009764113

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