نتایج جستجو برای: assisted selection in plant breeding programs
تعداد نتایج: 17142842 فیلتر نتایج به سال:
water stress and, in this regard, it is necessary to improve rice cultivars to tolerance to environmental stresses. In this research 154 recombinant inbred lines (F9) derived from a cross between Shah-Pasand and IR28 in three conditions (non-stress, osmotic stress -0.3 and -0.6 Mpa induced through polyethylene glycol-6000) were evaluated as a factorial experiment in randomized complete block de...
The diallel mating design is an important tool used by plant breeding programs to obtain information on trait inheritance. Knowledge of gene action, heritability and genetic advance from selection is a prerequisite for starting a breeding program for developing varieties of maize. Five maize S7 lines and their F2 progenies were studied in a 5 × 5 half-diallel crossing design to evaluate the gen...
inheritance of yield and its contributing characters in rapeseed (brassica napus l.) was studied in a 8×8 diallel cross through griffing and jinks-hayman analyses. both general combining ability (gca) and specific combining ability (sca) were highly significant for seed yield, seed weight and branches per plant, while only gca for seeds per pod and oil content and only sca for pods per plant an...
Morphological evaluation of large progenies is a problem in plant breeding programs, because the need for skilled labor capable characterizing various descriptors number individuals ripening simultaneously. In addition, maintenance field involves an unsustainable consumption resources that could be reduced. Marker-assisted selection (MAS) offers possibility accelerating process with consequent ...
The efficiency of marker-assisted introgression in backcross populations derived from inbred lines was investigated by simulation. Background genotypes were simulated assuming that a genetic model of many genes of small effects in coupling phase explains the observed breed difference and variance in backcross populations. Markers were efficient in introgression backcross programs for simultaneo...
Background Growing demand for food and fiber, and a rapidly changing climate will require that plant breeders accelerate the improvement of germplasm adapted to new sources of biotic and abiotic stress. In trees, the threat from climate change is more evident and the solutions more challenging than in any other plant species, due to the complexity and cost of breeding programs, and the long bre...
Advancements in high-throughput genotyping and sequencing technologies are enabling the development of a vast range genomic tools resources for new revolution plant breeding. Several genotyping-by-sequencing (GBS) methods including capture-based, genome complexity reduction cDNA (GBS-t) available application trait dissection, association mapping, selection (GS) crop plants. The aims this study ...
Stripe rust (yellow rust) caused by Puccinia striiformis f. sp. tritici, one of the most dangerous diseases wheat. Marker assisted selection methods make it possible to accelerate resistance gene donors improve breeding material through their introduction into hybridization programs. The goal this study was determine presence/absence yellow genes in wheat recombinant inbred lines Almaly/Avocet ...
Although the potential of marker-assisted selection (MAS) in fruit tree breeding has been reported, bi-parental QTL mapping before MAS has hindered the introduction of MAS to fruit tree breeding programs. Genome-wide association studies (GWAS) are an alternative to bi-parental QTL mapping in long-lived perennials. Selection based on genomic predictions of breeding values (genomic selection: GS)...
Maize is one of the important cereals in world after rice and wheat. It grown for grain as well fodder tropical, sub-tropical temperate regions World. The reduction maize productivity under drought stress conditions depends on different factors such plant development stage, intensity duration water deficit, varietal sensitivity to stress. Drought major constraints agriculture where limited avai...
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