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  • Cooked-kernel elongation  (1)
  • Dysploidy decrease  (1)
  • Root temperature  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Sensitivity of plasma membrane H+-ATPase of cucumber root system in response to low root temperature (2000)
    Springer
    Plant cell reports 19 (2000), S. 831-835 
    Details
    ISSN: 1432-203X
    Keywords: Key words Cucumis sativus ; Plasma membrane ; H+-ATPase ; H+-transport rate ; Root temperature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Cucumber plants (Cucumis sativus L.) were grown at different root temperatures and the H+-ATPase activities in the root plasma membranes were investigated. Electrolyte leakages and the amount of water transported from root to shoot indicated the sensitivity of cucumber root systems to low root temperature. The increase in H+-ATPase activity after 1 day of low root temperature treatment was reversed and gradually diminished as root temperatures of 10 °C continued for another 6 days. The H+-transport rate of the plasma membranes and the transcriptional activity of the corresponding gene expression closely followed the H+-ATPase activity. The role of H+-ATPase in root plasma membranes in terms of the root acclimation process at low root temperature is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002999900190
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  • 2
    Electronic Resource
    Electronic Resource
    RFLP analysis of genomic regions associated with cooked-kernel elongation in rice (1993)
    Springer
    Theoretical and applied genetics 87 (1993), S. 27-32 
    Details
    ISSN: 1432-2242
    Keywords: Cooked-kernel elongation ; Rice (Oryza sativa L.) ; RFLP markers ; QTL ; Grain quality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract As a result of earlier breeding efforts, portions of the genome of “Basmati 370” have been introgressed into a rice breeding line, B8462T3-710. Cooked-kernel elongation was increased in this breeding line to a level equal to that of “Basmati 370”. The objective of this study was to identify and locate quantitative trait loci (QTLs) associated with cooked-kernel elongation in an F3 population derived from a cross between B8462T3710 and the reduced-elongation recurrent parent variety, Dellmont. DNA from the parental lines and “Basmati 370” as a control, were screened for RFLPs using 170 clones chosen to cover the rice genome at intervals of 8 cM on average. Eighteen markers identified RFLPs common to Basmati 370 and B8462T3-710, but different from Dellmont, suggesting possible associations with kernel elongation. The B8462T3-710/Dellmont F3 population was analyzed for segregation of those RFLPs and for kernel elongation. Analysis of variance of the kernel elongation ratio revealed that two markers, 14.6 cM apart on chromosome 8, are significantly associated with this trait (RZ323 P ≤0.005, RZ562 P ≤0.05). Interval mapping suggests a single QTL with a close proximity to RZ323. This QTL was tested in F6 lines derived from the same cross and the presence of the B8462T3-710 segment detected by RZ323 caused a highly significant increase of the kernel elongation ratio (P ≤0.04). In addition, the QTL for kernel elongation and a gene for aroma, which are major components of the grain quality characteristics of Basmati-type rices, showed linkage. The availability of linked markers to the QTL may facilitate early selection for kernel elongation in rice breeding programs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00223739
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Homoeologous relationships of rice, wheat and maize chromosomes (1993)
    Springer
    Molecular genetics and genomics 241 (1993), S. 483-490 
    Details
    ISSN: 1617-4623
    Keywords: Comparative maps ; Dysploidy decrease ; Translocation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A set of cDNA clones, which had previously been mapped onto wheat chromosomes, was genetically mapped onto the chromosomes of rice. The resulting comparative maps make it possible to estimate the degree of linkage conservation between these two species. A number of chromosomal rearrangements, some of which must have involved interchromosomal translocations, differentiate the rice and wheat genomes. However, synteny of a large proportion of the loci appears to be conserved between the two species. The results of this study, combined with those from a recently published comparative map of the rice and maize genomes, suggest that rice, wheat and maize share extensive homoeologies in a number of regions in their genomes. Some chromosomes (e.g. chromosome 4 in rice, chromosomes 2 and 2S in wheat and maize, respectively) may have escaped major rearrangement since the divergence of these species from their last common ancestor. Comparative maps for rice, wheat and maize should make it possible to begin uniting the genetics of these species and allow for transfer of mapping information (including centromere positions) and molecular marker resources (e.g. RFLP probes) between species. In addition, such maps should shed light on the nature of chromosome evolution that accompanied the radiation of grasses in the early stages of plant diversification.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00279889
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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