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相关概念视频

Evolutionary Relationships through Genome Comparisons02:54

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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
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Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
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The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
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Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits
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基于基因组学的"端到端"选择性树种育种框架.

Yousry A El-Kassaby1, Eduardo P Cappa2,3, Charles Chen4

  • 1Faculty of Forestry, The University of British Columbia, Vancouver, BC, Canada. y.el-kassaby@ubc.ca.

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概括
此摘要是机器生成的。

这项研究引入了一个新的树木育种框架,使用基因组数据来加快遗传收益. 它消除了繁殖阶段,大大缩短了开发改进树种的时间表.

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科学领域:

  • 森林遗传学和森林繁殖
  • 定量遗传学 是一种定量遗传学.
  • 基因组选择 基因组选择

背景情况:

  • 传统的树木育种依赖于反复的选择,重复的选择,交配和测试周期.
  • 现有的方法缓慢,在解决环境变化和关注方面存在局限性.
  • 加快树木改善对于林业和气候变化适应至关重要.

研究的目的:

  • 引入一个新的"端到端"选择性树木育种框架.
  • 为了提高树木育种计划的效率和速度.
  • 为了应对气候变化与树木物种有关的压力.

主要方法:

  • 利用基于全基因组关联研究 (GWAS) 的序列数据用于特征架构.
  • 采用高分辨率的家谱关系分析.
  • 通过使用风传粉 (OP) 家庭消除了传统的繁殖阶段,并实施了最佳贡献选择.

主要成果:

  • 与传统方法相比,在捕获遗传收益方面表现出卓越的表现.
  • 在繁殖时间表中实现了显著的减少.
  • 通过使用多特征,多地点分析,成功管理了遗传收益和共同祖先的权衡.

结论:

  • 拟议的框架大大提高了选择性树木育种的效率.
  • 它加速了对重要树种的新计划的开发.
  • 该方法提供了一个强大的工具来解决气候变化对树木的影响.