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GENETICS
AbstractHeterosis refers to the superior performance of a hybrid over its parents. It is the basis for hybrid breeding particularly for maize and rice. Genetically it is due to interactions between alleles of quantitative trait loci (QTL) (dominance and epistasis).
Zhao-Bang Zeng +4 more
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AbstractHeterosis refers to the superior performance of a hybrid over its parents. It is the basis for hybrid breeding particularly for maize and rice. Genetically it is due to interactions between alleles of quantitative trait loci (QTL) (dominance and epistasis).
Zhao-Bang Zeng +4 more
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Molecular Genetics and Metabolism, 2000
Molecular heterosis occurs when subjects heterozygous for a specific genetic polymorphism show a significantly greater effect (positive heterosis) or lesser effect (negative heterosis) for a quantitative or dichotomous trait than subjects homozygous for either allele.
James P. MacMurray, David E. Comings
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Molecular heterosis occurs when subjects heterozygous for a specific genetic polymorphism show a significantly greater effect (positive heterosis) or lesser effect (negative heterosis) for a quantitative or dichotomous trait than subjects homozygous for either allele.
James P. MacMurray, David E. Comings
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Proceedings of the Royal Society of London. Series B - Biological Sciences, 1955
I shall deal only with the heterosis concerned with the genetic balance-mechanisms underlying morphism (balanced polymorphism as defined by E. B. Ford). All morphisms found in nature must involve a selective balance between the morphs (R. A.
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I shall deal only with the heterosis concerned with the genetic balance-mechanisms underlying morphism (balanced polymorphism as defined by E. B. Ford). All morphisms found in nature must involve a selective balance between the morphs (R. A.
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1998
Heterosis is a term used to describe the phenomenon in which the performance of an F1, produced by the crossing of two homozygous but genetically different individuals, is superior to that of the best parent. Since the time Shull (1914) introduced the term heterosis, breeders have made wide use of this phenomenon, and the list of crops in which ...
M. Koutsika-Sotiriou +4 more
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Heterosis is a term used to describe the phenomenon in which the performance of an F1, produced by the crossing of two homozygous but genetically different individuals, is superior to that of the best parent. Since the time Shull (1914) introduced the term heterosis, breeders have made wide use of this phenomenon, and the list of crops in which ...
M. Koutsika-Sotiriou +4 more
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The Heterosis of Operculicarya
Cactus and Succulent Journal, 2010O perculicarya (O.) species have been praised by growers, collectors, and exhibitors for decades. It seems that almost all of the species are considered great subjects for staging and are highly desirable because of their care-free nature. The incredible diversity amongst them ranges from tree form to true caudiciform, each with its own set of unique ...
Joe Stead, Jason Eslamieh
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1992
Efficiency of hybrid breeding could be greatly enhanced by reliable methods of prediction of F1 hybrids values or heterosis. Use of parents per se values through different approaches (including distance computation) should be of poor efficiency for species that exhibit high heterotic effects, such as Maize.
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Efficiency of hybrid breeding could be greatly enhanced by reliable methods of prediction of F1 hybrids values or heterosis. Use of parents per se values through different approaches (including distance computation) should be of poor efficiency for species that exhibit high heterotic effects, such as Maize.
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The genetical basis of heterosis
Proceedings of the Royal Society of London. Series B - Biological Sciences, 1955Appreciation of the practical value of hybrid vigour is as old as the mule, but its scientific investigation began only relatively recently. Vigour transcending that of the parents was observed in hybrids by a number of the early hybridizers and, indeed, Mendel himself records it as an incidental observation on his peas; but it remained ...
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Heterosis and variability in the mouse
Proceedings of the Royal Society of London. Series B - Biological Sciences, 1955The relation between heterosis and variabihty discussed by previous speakers i well illustrated by an example in the mouse where the structure of the second thoracic vertebra (vertebra prominens) is very variable; it may have a broad spatulat spinous process (+ + +), a round rod-shaped one (+ +), a mere spike (+), or then may be no osseous
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