Kathryn Kolacz

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The Biolistics® particle delivery system for the transformation of soybean (Glycine max L. Merr.) was evaluated in two different regeneration systems. The first system was multiple shoot proliferation from shoot tips obtained from immature zygotic embryos of the cultivar Williams 82, and the second was somatic embryogenesis from a long term proliferative(More)
The ribosomal DNA (rDNA) of Cucurbita pepo L. has been found to consist of tandemly arrayed repeat units, most of which are 10 kilobases in length. Thirty-six repeat units, cloned into the HindIII site of pACYC 177, fall into seven classes which differ from each other in length and/or nucleotide sequence. Most of the heterogeneity occurs in noncoding(More)
Submitted February 22, 1988 Accession no.X07041 Cytoplasmic male sterility (cms) in maize (Zea mays L.) is correlated with alterations in the mitochondrial genome. Four genetically distinct cytoplasms exist: N (normal) in which fertile pollen develops, and S, C and T in which pollen fails to develop [4,5]. Cms-S is characterized [4] by two ( free(More)
The incorporation of uracil-C(14) into macromolecules in Escherichia coli cells is decreased by doses of ionizing radiation when the cells are in very dilute suspension. The decrease results from an action of irradiated medium on the cells, and a similar reaction is observed during the incorporation of thymine (indication of DNA synthesis) and of proline(More)
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