Microsatellite-assisted backcross selection in maize
نویسندگان
چکیده
منابع مشابه
Backcross assisted by microsatellite markers in common bean.
The objectives of the present study were to monitor the effect of backcrossing through microsatellite markers and to compare different marker assisted selection strategies. Four populations were developed using donor parents resistant to the bean golden mosaic virus and, for all crosses, only individuals resistant to the bean golden mosaic virus were backcrossed. For crosses ARC100-4 x DOR303 a...
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A number of different marker-assisted selection (MAS) approaches do exist for the improvement of polygenic traits. Results of a marker-assisted backcross (MABC) selection experiment aimed at improving grain yield under drought conditions in tropical maize are presented and compared with alternative MAS strategies. The introgression of favourable alleles at five target regions involved in the ex...
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The efficiency of marker-assisted introgression in backcross populations derived from inbred lines was investigated by simulation. Background genotypes were simulated assuming that a genetic model of many genes of small effects in coupling phase explains the observed breed difference and variance in backcross populations. Markers were efficient in introgression backcross programs for simultaneo...
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The ae (amylose extender) recessive mutant alleles in maize are an important genetic resource for the development of high-amylose cultivars. On the basis of ae allele sequences (from the National Center for Biotechnology Information), the ae mutant alleles were cloned from high-amylose maize and the allelic Ae gene from common maize luyuan92 inbred lines. Five pairs of primers were designed to ...
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INKAGE estimates in autotetraploids are more complicated than in diploids for three reasons outlined by FISHER (1949) : 1) The multiplicity of segregating genotypes-for IWO loci with two alleles at each there are 19 doubly heterogenic genotypes in an autotetraploid, compared with only two in a diploid. 2) The eleven possible modes of gamete formation, compared with only two in diploidstetraploi...
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ژورنال
عنوان ژورنال: Genetics and Molecular Biology
سال: 2005
ISSN: 1415-4757
DOI: 10.1590/s1415-47572005000500022