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Title: Inheritance of RFLP loci in a loblolly pine three-generation pedigree

Author: Devey, M.D.; Jermstad, K.D.; Tauer, C.G.; Neale, D.B.;

Date: 1991

Source: Theor Appl Genet 83 (2):238-242

Publication Series: Scientific Journal (JRNL)

Description: A high-density restriction fragment length polymorphism (RFLP) linkage map is being constructed for loblolly pine (Pinus taeda L.). Loblolly pine cDNA and genomic DNA clones were used as probes in hybridizations to genomic DNAs prepared from grandparents, parents, and progeny of a three-generation outbred pedigree. Approximately 200 probes were evaluated for their ability to detect polymorphic loci between DNAs prepared from the two parent trees, 20-1010 and 11-1060, and cut with four different restriction enzymes: BamHI, DraI, EcoRI, and HindIII. More than half of the probes detecting single- or low-copy number sequences (56%) revealed polymorphisms between the two parents with at least one restriction enzyme. If necessary, an additional hybridization to DNAs prepared from the four grandparent trees was conducted to determine the zygosity of parent trees. Ten of these probes were hybridized to progeny DNAs from this cross and, as expected, the markers were inherited as simple codominant Mendelian alleles. Four of the ten probes detected segregation of three alleles at one locus, and four probes detected more than one independently segregating locus. RFLPs can be used immediately to assess genetic diversity in conifer populations and to "fingerprint" genotypes in tree improvement programs.

Keywords: Pinus taeda L., Restriction fragment length polymorphisms, genome mapping

Publication Notes:

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Devey, M.D.; Jermstad, K.D.; Tauer, C.G.; Neale, D.B. 1991. Inheritance of RFLP loci in a loblolly pine three-generation pedigree. Theor Appl Genet 83 (2):238-242.


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