منابع مشابه
Genetic and morphological analysis of a maize-teosinte F2 population: implications for the origin of maize.
Genes controlling the dramatic morphological differences between maize and its presumed progenitor (teosinte) were investigated in a maize-teosinte F2 population through the use of molecular markers. Results indicate that the key traits differentiating maize and teosinte are each under multigenic control, although for some traits, such as the number of ranks of cupules, the data are consistent ...
متن کاملEvaluation of Water Deficit Tolerance Indices in New Hybrids of Maize (Zea mays L.) with SIMMYT Origin
Regarding the insufficient water resources, developing of cultivars with high tolerance to water deficit can be very effective to optimize water consumption. To identify maize hybrids with higher tolerance to water deficit, 52 single cross hybrids were field evaluated according to a randomized complete block design with three replications in each irrigation regime. The hybrids were produced thr...
متن کاملThe origin of an unstable locus in maize.
I N maize many unst(ab1e gene loci can, upon analysis, be ascribed to specific mutable systems. Often these systems consist of two units: a controlling element, such as Ds or Z, which responds to a regulatory element, Ac or En, respectively (PETERSON 1965). In addition, in cultures known to contain elements of a mutable system, such1 as Ac-Ds (MCCLINTOCK 1950, 1951) or En-Z (PETERSON 1960, 1961...
متن کاملMutable R-navajo alleles of cyclic origin in maize.
The generation in cyclic fashion of 26 mutable R-Navajo (mR(nj)) alleles in maize involved transposition of a non-specific repressor of gene action, Modulator (Mp), first away from, and then back to, the R locus represented by the R-Navajo (R(nj)) allele on chromosome 10. The mR(nj) alleles reconstituted in this way varied widely, and continuously, in mutability to R(nj)-that is, in transpositi...
متن کاملParent-of-Origin-Effect rough endosperm Mutants in Maize.
Parent-of-origin-effect loci have non-Mendelian inheritance in which phenotypes are determined by either the maternal or paternal allele alone. In angiosperms, parent-of-origin effects can be caused by loci required for gametophyte development or by imprinted genes needed for seed development. Few parent-of-origin-effect loci have been identified in maize (Zea mays) even though there are a larg...
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ژورنال
عنوان ژورنال: Nature
سال: 1940
ISSN: 0028-0836,1476-4687
DOI: 10.1038/146338b0