"Hybrid vigor" refers to the increased strength, health, or productivity that results from breeding different varieties or species together. It means that when you mix different things, they can often become stronger or more successful.
Full definition
Teasing out the hidden subtleties of a type
of hybrid vigor involving just one gene has provided the scientists with means to tweak the length of time that bushy tomato varieties can produce flowers.
Some experts believe
in hybrid vigor — the idea that mixed breed dogs are inherently healthier than purebred dogs because they have a lower risk for inherited health problems.
In his previous work, CSHL Associate Professor Zach Lippman and Israeli colleagues identified a rare example of
hybrid vigor involving a genetic defect in the gene that makes florigen, a hormone that controls the process of flowering and flower production.
Their research has revealed one genetic mechanism
for hybrid vigor, a property of plant breeding that has been exploited to boost yield since the early 20th century.
A creative group of Toronto independent game developers believes that the games industry needs a little
more hybrid vigor.
I discovered I could increase the per plant yield and also the pod size by employing a few simple practices such as choosing individual seedlings of the largest and most favorable growth characteristics and then when I began crossing varieties choosing seedlings that show
distinguishing hybrid vigor!
Hybrid vigor refers to when a crossbreed plant or animal shows superior traits compared to its parents.
Among them, when MET1 (Methyltransferase 1, involved in maintaining CG methylation) and Pol IV (related to RdDM, RNA directed DNA methylation, which causes de novo methylation) lost their genetic functions, abnormalities were observed in DNA methylation, but there was no observable effect
on hybrid vigor.
By analyzing gene expression and measured traits in aneuploids and polyploids, and in their hybrids, he derived the Gene Balance Hypothesis, an encompassing concept that can
explain hybrid vigor (heterosis), as well as evolutionary selection in polyploids and in duplicated genes.
Do purebred dogs
lack hybrid vigor and reproductive ability compared to mixed breeds?
Because of what is known
as hybrid vigor, a mix - breed is the healthiest of all dogs.
We breed for great temperaments and intelligence as well as no / low shedding, hypoallergenic and
hybrid vigor qualities.
The closer the generations come together the more consistency there will be in the lines, but the genetic problems of the purebreds are more likely to reappear, and
hybrid vigor diminishes.
There tends to be a general belief that breeds who sit more in the «mutt» category than «purebred» have
more hybrid vigor.
Our key target is to produce hybrid rice with consistently high - yield heterosis (
hybrid vigor), good grain quality, tolerance to key environmental stresses, multiple resistances to insect pests and diseases, and high seed production yield.
As with other hybrid plants and animals, hybrid rice has both greater vigor and higher yield than either parent variety — this is commonly called «
hybrid vigor».
Our research into hybrid rice now focuses on producing hybrid rice with consistently high - yield heterosis (
hybrid vigor), good grain quality, tolerance to key environmental stresses, multiple resistances to insect pests and diseases, and high seed production yield.
It promotes what I call cultural vigor similar to the way in which molecular and genetic diversity promotes «
hybrid vigor» in nature and thus strength, resilience and a higher potential for a problem - free future.
The findings may also help researchers solve the mystery of
hybrid vigor, the as - yet unsolved puzzle as to why a hybrid offspring proves to be a better grower than what would be expected from the sum of its parents» genetic assets.
However, in an F1 hybrid created using a plant with a non-functional DDM1 chromatin remodeling factor (involved in maintaining DNA methylation by modifying chromatin structure), abnormalities were seen in DNA methylation, and the level of
hybrid vigor was significantly lower.
First - generation hybrid plants (F1 plants) bred to exhibit
these hybrid vigor attributes are widely cultivated.
A research group has discovered that a gene involved in maintaining DNA methylation is closely connected to
hybrid vigor in Arabidopsis thaliana.
Hybrid vigor can be seen in the model plant Arabidopsis thaliana (which belongs to the same Cruciferae family as Chinese cabbages).
In this research, the team used Arabidopsis thaliana with mutations in a gene related to DNA methylation, and by confirming the instances of
hybrid vigor, they investigated which genes and epigenetic modifications regulating the genes were linked to hybrid vigor.
Recently there have been multiple reports that
hybrid vigor is influenced by epigenetic regulation as well as genetics.
This demonstrated that DDM1 and
hybrid vigor are closely linked, and the epigenetic modification regulated by DDM1 (DNA methylation) is important in hybrid vigor.
There have been few concrete reports of the genes involved in
hybrid vigor, but based on this research, one of the key genes for hybrid vigor has been clarified.
First identified at CSHL by George Shull in 1908,
hybrid vigor — or heterosis, as biologists call it — involves interbreeding genetically distinct plants to generate offspring more robust than either inbred parent.
Inter-breeding animals from two genetically distinct populations can sometimes lead to «
hybrid vigor», in which offspring reap the benefits of their parents» individual qualities.
The Puggle is a cross between a Pug and a Beagle, and supporters claim they are healthier than either due to
hybrid vigor.
By contrast, the random mating of mixed - breed dogs can increase «
hybrid vigor» — meaning greater health and resistance to disease.
Mixed breeds might offer «
hybrid vigor» and fewer problems, but mixed parentage is never a guarantee of perfect health.
The purpose of selective breeding such as this was to create a genetically sound cat with a large gene pool and
hybrid vigor.
It is so sad that a lot of folks, including young veterinarians these days, buy into the «
hybrid vigor» baloney.
One assumption underlying the Designer Dog phenomenon is that of
hybrid vigor or heterosis, «increased vigor arising from crossbreeding different species of plants or animals.»
Mixed breed dogs, while not exempt from these medical problems, are less likely to develop them due to «
hybrid vigor» — a variety of genetic material gives mutts a health advantage over their upper crust canine companions.
This is due a phenomenon called «
hybrid vigor,» which refers to the robust health and hardiness of animals from a wide and varied gene pool.
If they are bred from a purebred poodle and a purebred Golden, this is known as «
hybrid vigor».
Therefore, I am confident that
hybrid vigor is indeed creating a healthier dog that will be with you for a long time.