نتایج جستجو برای: matricaria chamomilla genetic diversity indirect selection selection indexpath analysis

تعداد نتایج: 3646821  

Journal: :Genetics 2017
Herman De Beukelaer Yvonne Badke Veerle Fack Geert De Meyer

Long-term genomic selection (GS) requires strategies that balance genetic gain with population diversity, to sustain progress for traits under selection, and to keep diversity for future breeding. In a simulation model for a recurrent selection scheme, we provide the first head-to-head comparison of two such existing strategies: genomic optimal contributions selection (GOCS), which limits reali...

2012
Deepti Gupta Shabina Ghafir

Genetic algorithm is a search & optimization method based on the Darwin’s principle of Survival of the fittest. It is an abstraction of complex natural genetics and natural selection process. Genetic algorithm is based on the principle of natural selection for reproduction and various evolutionary operations as crossover and mutation. Two controlling factors that need to be balanced in the proc...

Journal: :Genetics 2011
Piter Bijma

Genetic selection is a major force shaping life on earth. In classical genetic theory, response to selection is the product of the strength of selection and the additive genetic variance in a trait. The additive genetic variance reflects a population's intrinsic potential to respond to selection. The ordinary additive genetic variance, however, ignores the social organization of life. With soci...

2012
Marie-Claire Namroud Jean Bousquet Trevor Doerksen Jean Beaulieu

A scan involving 1134 single-nucleotide polymorphisms (SNPs) from 709 expressed genes was used to assess the potential impact of artificial selection for height growth on the genetic diversity of white spruce. Two case populations of different sizes simulating different family selection intensities (K = 13% and 5%, respectively) were delineated from the Quebec breeding program. Their genetic di...

Journal: :Proceedings. Biological sciences 2016
Emily J Austen Arthur E Weis

Our understanding of selection through male fitness is limited by the resource demands and indirect nature of the best available genetic techniques. Applying complementary, independent approaches to this problem can help clarify evolution through male function. We applied three methods to estimate selection on flowering time through male fitness in experimental populations of the annual plant B...

A.A. Shadparvar, E. Darang M. Golshani

Two selection goals of inclusion or exclusion of calving interval (CI) in the selection goal function for Holstein cows in Iran, besides milk yield, milk fat percentage, and milk protein percentage, were studied. Four selection indices were composed of using the information on production traits, CI and / or days from calving to first insemination (DFI). The results of the predicted genetic grow...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Sherry R Whitt Larissa M Wilson Maud I Tenaillon Brandon S Gaut Edward S Buckler

Maize is both phenotypically and genetically diverse. Sequence studies generally confirm the extensive genetic variability in modern maize is consistent with a lack of selection. For more than 6,000 years, Native Americans and modern breeders have exploited the tremendous genetic diversity of maize (Zea mays ssp. mays) to create the highest yielding grain crop in the world. Nonetheless, some lo...

آوانس, آرمن, اسفندیاری, عزت‌اله, سفالیان, امید, شکرپور, مجید, صارمی راد, بابک, هاشمی نژاد, سیده الهه,

Cadmium is a toxic unnecessary element for humans and plants which is easily absorbed by plants. Genetic variation in cadmium accumulation provides an opportunity for breeding programs to select genotypes with low cadmium. Due to the high cost of plant tissue analysis to determine the amount of cadmium, use of markers to make efficient selection of low cadmium accumulating genotypes is an effec...

2011
Kirk E. Lohmueller Anders Albrechtsen Yingrui Li Su Yeon Kim Thorfinn Korneliussen Nicolas Vinckenbosch Geng Tian Emilia Huerta-Sanchez Alison F. Feder Niels Grarup Torben Jørgensen Tao Jiang Daniel R. Witte Annelli Sandbæk Ines Hellmann Torsten Lauritzen Torben Hansen Oluf Pedersen Jun Wang Rasmus Nielsen

A major question in evolutionary biology is how natural selection has shaped patterns of genetic variation across the human genome. Previous work has documented a reduction in genetic diversity in regions of the genome with low recombination rates. However, it is unclear whether other summaries of genetic variation, like allele frequencies, are also correlated with recombination rate and whethe...

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