نتایج جستجو برای: in breeding programs

تعداد نتایج: 17002543  

Journal: :Crop Breeding and Applied Biotechnology 2021

The usefulness of genomic selection (GS) for improvement complex traits has been demonstrated in plant and animal breeding. While fully adopted the livestock sector commercial breeding, implementation GS public-sector breeding programs lags. goal this review is to discuss advancements opportunities near-term long-term adoption programs. We also highlighted specific applications cultivar develop...

Hamid Najafi Zarini Seyed Kamal Kazemitabar Zahra Ghanei,

The main objective for plant breeding is to increase genetic diversity. Mutation induction is a method to increase genetic diversity associated with selection, recombination, or a combination of these approaches in plant breeding. The present research was aimed to compare efficacy of different doses of Gamma rays (150, 200, 250, 300 and 350 Gy and zero dose control) on the sesame morphological ...

Opiumpoppy (Papaver somniferum L.) is one of the important and oldest cultivated medicinal plant used to extract morphine, papaverine, thebaine, codeine and other alkaloids. This study aimed to determine general and specific combining abilities of F1 hybrids obtained from various crosses and their parental lines for developing appropriate breeding material for future breeding programs. The resu...

2014
J. Hwang Yousry El-Kassaby Dag Lindgren Tomas Funda Steven Mckeand Ole K. Hansen

Traditional tree improvement programs start with deliberate phenotypic selection of candidate trees followed by rounds of recurrent selection characterized by cumulative incremental gain advancements. While effective, the process is elaborate, quantitatively oriented, and follows sophisticated breeding theories. Breeding and testing start with the selection of pre-determined mating designs, req...

اسلمی نژاد, علی اصغر, رکوعی, محمد, شریعتی, محمدمهدی, طهمورث پور, مجتبی, فرجی آروق, هادی,

The effects of herd size, semen type, generation overlapping and breeding goal on genetic gain in Holstein cows were studied through stochastic simulation. Three levels of herd size (100, 200, and 400), two levels of semen type (unsexed and sexed), three levels of generation overlapping (low, average and high) and two levels of breeding goal (narrow and broad) were combined together to make 36 ...

Hamid Najafi Zarini Seyed Kamal Kazemitabar Zahra Ghanei,

The main objective for plant breeding is to increase genetic diversity. Mutation induction is a method to increase genetic diversity associated with selection, recombination, or a combination of these approaches in plant breeding. The present research was aimed to compare efficacy of different doses of Gamma rays (150, 200, 250, 300 and 350 Gy and zero dose control) on the sesame morphological ...

2007
D. G. McLaren Oswald Avery Colin MacLeod

Building on a solid foundation of performance testing, quantitative genetics, and statistical estimation of breeding values; recent developments in pig line improvement programs have included the application of both major gene and marker genomics, and an increased focus on genotype by environment interactions and crossbred selection objectives. Additionally, selection objectives have broadened ...

Journal: :International Journal of Plant Genomics 2008
Bert C. Y. Collard Casiana M. Vera Cruz Kenneth L. McNally Parminder S. Virk David J. Mackill

Using DNA markers in plant breeding with marker-assisted selection (MAS) could greatly improve the precision and efficiency of selection, leading to the accelerated development of new crop varieties. The numerous examples of MAS in rice have prompted many breeding institutes to establish molecular breeding labs. The last decade has produced an enormous amount of genomics research in rice, inclu...

2006
Horst Brandt

Statistics for weaner production over the last few years in Germany clearly show a continuous decline in the use of purebreds and an increase in the use of crossbred piglets. Most of the crossbred piglets (about 60 percent) are produced by breeding companies. About 20 different breeding companies are established in Germany. Besides these breeding companies the former pedigree breeders have also...

Journal: :علوم دامی ایران 0
فاطمه سلیمی دانشجوی سابق دکتری، گروه علوم دامی، واحد علوم و تحقیقات، دانشگاه آزاداسلامی، تهران اردشیر نجاتی جوارمی دانشیار گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج مهدی امین افشار استادیار، گروه علوم دامی، واحد علوم و تحقیقات، دانشگاه آزاداسلامی، تهران محمود هنرور استادیار گروه علوم دامی، واحد شهر قدس، دانشگاه آزاد اسلامی، تهران عباس جهانبخشی استادیار گروه علوم دامی، واحد ورامین- پیشوا، دانشگاه آزاد اسلامی، تهران

in this research, two mating schemes for the management of recessive genetic disorders affecting abortion in a dairy cattle population were simulated. the first mating scheme was performed under three different scenarios: 1. the mating of a pair of two carriers of the same lethal haplotype was avoided. 2. it was avoided matings in which the service sires and cow's sire carried the same let...

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