Male Sterile Lines
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Identification of maintainer and male sterile lines within a Brazilian onion tropical population.
2010
INTERNATIONAL HORTICULTURAL CONGRESS. Publicado em: 2011
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2. Extracting female inbred lines from commercial sunflower hybrids.
The objective of this study was to obtain female inbred lines from sunflower (Helianthus annuus) hybrids. A methodology based on altering inbred lines carrying the fertility restorer gene (Rf) obtained from self pollinating hybrids into inbred lines with normal cytoplasm without the Rf gene was described. Further, derived male-sterile inbred lines were devel
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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3. Resistance of sorghum hybrids to Colletotrichum sublineolum: previsibility by lineage progenitor reaction. / ResistÃncia de hÃbridos de sorgo a Colletotrichum sublineolum: previsibilidade por meio da reaÃÃo de linhagens progenitoras
A antracnose (Colletotrichum sublineolum Henn. in Kab. &BubÃk), està disseminada em todas as regiÃes produtoras de sorgo no paÃs. Foi objetivo deste trabalho, caracterizar a diversidade populacional de C. sublineolum em locais de ocorrÃncia de severas epidemias da doenÃa, identificar combinaÃÃes entre linhagens elite capazes de gerar hÃbridos de sor
Publicado em: 2006
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4. Maize Mitochondria: Cytochromes of Fertile and Cytoplasmic Male-sterile Lines 1
Cytochromes a + a3, b, and c of mitochondria prepared from fertile and cytoplasmic male-sterile single- and double-cross maize (Zea mays L.) lines were examined by difference spectra at 25 C. The sterile lines contained the full complement of cytochromes, and absorption maxima were identical for each fertile-sterile combination. A small, but significant, inc
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5. Transgenic male-sterile plant induced by an unedited atp9 gene is restored to fertility by inhibiting its expression with antisense RNA.
We have previously shown that the expression of an unedited atp9 chimeric gene correlated with male-sterile phenotype in transgenic tobacco plant. To study the relationship between the expression of chimeric gene and the male-sterile trait, hemizygous and homozygous transgenic tobacco lines expressing the antisense atp9 RNA were constructed. The antisense pr
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6. Variations in mitochondrial DNA organisation between normal and male-sterile cytoplasms of maize.
Mitochondrial DNA from male-sterile lines of maize carrying S cytoplasm contains two small DNA species which are absent from N (fertile) and other male-sterile cytoplasms. Portions of these species have been purified and amplified by constructing recombinant plasmids in vitro. Probes made with these plasmids have been used to demonstrate; i) a homologous reg
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7. The nucleotide sequence and transcription of minicircular mitochondrial DNA's associated with male-fertile and cytoplasmic male-sterile lines of sugarbeet.
Male-fertile (MF) and cytoplasmic male-sterile (CMS) lines of sugarbeet possess characteristic low molecular weight minicircular mitochondrial DNA's, and Southern hybridizations revealed sequence homologies between them. The complete nucleotide sequences of minicircle a present in MF and CMS lines, and minicircle d present in some MF lines have been determin
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8. Instability of S Male-Sterile Cytoplasm in Maize
A number of S male-sterile plants from several shrunken-2 inbred lines were crossed initially with an R138-TR inbred line pollinator carrying the nonrestoring genotype for S sterile cytoplasm. One such cross, involving a male-sterile female parent from inbred line M825, produced, unexpectedly, a number of male-fertile F1 progeny, along with the expected male
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9. Identification and characterization of double-stranded RNA associated with cytoplasmic male sterility in Vicia faba
The cytoplasmic male sterility (CMS) trait of at least one line of Vicia faba plants is always associated with the presence of high molecular weight double-stranded RNA in the leaf tissue extracts. Subcellular fractions of leaf tissue from CMS and fertile maintainer plants were initially analyzed in an attempt to locate, identify, and characterize the geneti
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10. Unique DNA associated with mitochondria in the “S”-type cytoplasm of male-sterile maize
Mitochondrial DNAs were prepared from maize lines with normal cytoplasm and with the T, C, S, and EP sources of male-sterile cytoplasms. Agarose gel electrophoresis of these preparations revealed a main high-molecular-weight DNA band. In addition, the S cytoplasm was characterized by the presence of two faster migrating DNAs of molecular weight 3.42 to 3.48
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11. Identification of a mitochondrial protein associated with cytoplasmic male sterility in petunia.
The petunia fused gene (pcf), which is associated with cytoplasmic male sterility (CMS), is composed of sequences derived from atp9, coxII, and an unidentified reading frame termed urfS. To determine whether the pcf gene is expressed at the protein level, we produced antibodies to synthetic peptides specified by the coxII and urfS portions of the pcf gene. A
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12. A Mup promoter-thymidine kinase reporter gene shows relaxed tissue-specific expression and confers male sterility upon transgenic mice.
A hybrid gene was made by fusing the 2.2-kilobase 5' promoter region of a mouse group 1 major urinary protein (Mup) gene to the coding region of the herpes simplex virus type 1 thymidine kinase gene (HSV tk) and introduced into the genomes of mice by microinjection. Transgenic G0 males were sterile, or when fertile did not transmit the foreign gene, and the