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相关概念视频

Plant Breeding and Biotechnology01:59

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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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Genetic Variation01:25

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Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles,...
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Heritability is a statistical concept that measures the degree to which genetic differences among individuals contribute to trait variations within a population. It is a fundamental idea in genetics, often prone to misinterpretation. Heritability is expressed as a percentage, reflecting the proportion of variation in a specific trait across a population that can be linked to genetic differences. However, it's important to understand that heritability does not determine how "genetic"...
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When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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通过基因组预测和选择指数来提高葡萄葡萄品种繁殖效率.

Charlotte Brault1,2, Vincent Segura1,3, Maryline Roques1,2

  • 1UMT Geno-Vigne®, IFV, INRAE, Institut Agro Montpellier, Montpellier 34398, France.

G3 (Bethesda, Md.)
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概括

基因组预测通过使用分子标记物来识别葡萄酒和干邑生产中优秀的个体来加速葡萄酒的育种. 这种方法提高了适应气候变化的能力,缩短了传统的繁殖时间表.

关键词:
酒是什么意思 酒是什么意思基因 捕食者 捕食者基因组预测 基因组预测粉红色的葡萄酒是什么?共享数据资源共享数据资源基因组预测 基因组预测基因组选择 基因组选择葡萄藤是一种葡萄.意识形态类型 意识形态类型植物育种 植物育种选择指数的选择指数.

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科学领域:

  • 植物育种 植物育种
  • 基因组学就是基因组学.
  • 葡萄种植 葡萄种植 葡萄种植

背景情况:

  • 葡萄藤育种是缓慢的 (20-25年),需要新的特征来适应气候变化.
  • 传统的选择依赖于表型数据和有限的标记,缺乏定义的意识形态.

研究的目的:

  • 通过基因组预测加速葡萄葡萄品种的繁殖.
  • 在葡萄酒和干邑品种计划中识别优秀个体.
  • 在与行业代表的合作下定义育种意识形态.

主要方法:

  • 应用基因组预测 (基因组最佳线性无偏预测器,最小绝对收缩选择运算器) 在两个葡萄藤育种计划中的30个特征.
  • 评估预测能力和探索跨人口预测.
  • 使用多变量选择指数来识别优秀个体.

主要成果:

  • 基因组预测显示了跨特征的可变预测能力 (0-0.9),受遗传性和特征特征的影响.
  • 跨种群预测显示了利用各种葡萄树种群的潜力.
  • 优秀的个人成功地被确定为色葡萄酒和干邑计划.

结论:

  • 基因组预测是一个强大的工具,可以加速葡萄品种的繁殖,并提高气候变化适应能力.
  • 与行业合作的意识形态定义确保了育种计划的相关性.
  • 这项研究为有效选择精英葡萄藤基因型提供了一个框架.