منابع مشابه
Double and single backcross linkage estimates in autotetraploid maize.
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...
متن کاملAllotetraploid and autotetraploid models of linkage analysis
As a group of important plant species in agriculture and biology, polyploids have been increasingly studied in terms of their genome structure and organization. There are two types of polyploids, allopolyploids and autopolyploids, each resulting from a different genetic origin, which undergo meiotic divisions of a distinct complexity. A set of statistical models has been developed for linkage a...
متن کاملAn Autotetraploid Linkage Map of Rose (Rosa hybrida) Validated Using the Strawberry (Fragaria vesca) Genome Sequence
Polyploidy is a pivotal process in plant evolution as it increase gene redundancy and morphological intricacy but due to the complexity of polysomic inheritance we have only few genetic maps of autopolyploid organisms. A robust mapping framework is particularly important in polyploid crop species, rose included (2n = 4x = 28), where the objective is to study multiallelic interactions that contr...
متن کاملAssociation and Linkage Analysis of Aluminum Tolerance Genes in Maize
BACKGROUND Aluminum (Al) toxicity is a major worldwide constraint to crop productivity on acidic soils. Al becomes soluble at low pH, inhibiting root growth and severely reducing yields. Maize is an important staple food and commodity crop in acidic soil regions, especially in South America and Africa where these soils are very common. Al exclusion and intracellular tolerance have been suggeste...
متن کاملHigh-throughput linkage analysis of Mutator insertion sites in maize.
Insertional mutagenesis is a cornerstone of functional genomics. High-copy transposable element systems such as Mutator (Mu) in maize (Zea mays) afford the advantage of high forward mutation rates but pose a challenge for identifying the particular element responsible for a given mutation. Several large mutant collections have been generated in Mu-active genetic stocks, but current methods limi...
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ژورنال
عنوان ژورنال: Genetics
سال: 1962
ISSN: 1943-2631
DOI: 10.1093/genetics/47.4.367