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restriction fragment length polymorphism analysis of ccdd genome species of the genus oryza l.restriction fragment length polymorphisms (rflps) were studied in fourteen accessions of ccdd genome allotetraploid wild rice species (oryza latifolia, o. alta and o. grandiglumis). fourteen nuclear rflp markers previously mapped in aa genome-cultivated rice were used as probes. a phylogenetic tree, constructed by parsimony analysis based on rflps, grouped the accessions according to their geographic origin from central or south america. oryza alta, o. grandiglumis and one accession of o. latifo ...19911677594
rflp analysis of the progeny from oryza alta swallen x oryza sativa l.rflp analyses were carried out in the progeny from a cross of two phylogenetically distant rice species, wild rice oryza alta swallen (ccdd, 2n = 48) and cultivated rice o. sativa l. (aa, 2n = 24). the sterile plants gave heterozygous rflp patterns at most of the loci detected. they looked more like their wild rice parent, with 36 chromosomes in their root-tip cells and pollen mother cells. in two partially fertile plants, however, most of the markers that were used showed rflp patterns similar ...199518470217
rhizobium oryzae sp. nov., isolated from the wild rice oryza alta.during a study of endophytic nitrogen-fixing bacteria present in the wild rice species oryza alta, eight novel isolates were obtained from surface-sterilized roots and classified in the genus rhizobium on the basis of almost-complete 16s rrna gene sequence analysis. these strains can nodulate phaseolus vulgaris and glycine max. the highly similar protein patterns, dna fingerprint patterns of insertion sequence-based pcr (is-pcr) and dna-dna hybridizations showed that these novel isolates were me ...200818768622
characterization of seeds of selected wild species of rice (oryza) stored under high temperature and humidity conditions.wild progenitors of rice (oryza) are an invaluable resource for restoring genetic diversity and incorporating useful traits back into cultivars. studies were conducted to characterize the biochemical changes, including sds-page banding pattern of storage proteins in seeds of six wild species (oryza alta, o. grandiglumis, o. meridionalis, o. nivara, o. officinalis and o. rhizomatis) of rice stored under high temperature (45 degrees c) and humidity (approixmately 100%) for 15 days, which facilitat ...201020653290
Genetic Diversity of Endophytic Diazotrophs of the Wild Rice, Oryza alta and Identification of the New Diazotroph, Acinetobacter oryzae sp. nov.Thirty-three endophytic diazotrophs were isolated from surface-sterilized leaves, stem, and roots of wild rice Oryza alta. The SDS-PAGE profile of total protein and insertion sequence-based polymerase chain reaction (IS-PCR) fingerprinting grouped the isolates into four clusters (I-IV). The 16S rRNA gene sequence homology of the representative strains B21, B31, B1, and B23 of clusters I, II, III, and IV were assigned to Pseudomonas oleovorans (99.2% similarity), Burkholderia fungorum (99.4% simi ...201122105517
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