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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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Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
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Asexual reproduction allows plants to reproduce without growing flowers, attracting pollinators, or dispersing seeds. Offspring are genetically identical to the parent and produced without the fusion of male and female gametes.
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Introduction to Seed Plants

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Most plants are seed plants—characterized by seeds, pollen, and reduced gametophytes. Seed plants include gymnosperms and angiosperms.
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Methods for Performing Crosses in Setaria viridis, a New Model System for the Grasses
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谷物草是一种单一的遗传系统吗?

Martin Mascher1,2, Marina Püpke Marone3, Mona Schreiber4

  • 1Leibniz Institute of Plant Genetics and Crop Plant Research, Gatersleben, Germany. mascher@ipk-gatersleben.de.

Nature plants
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概括

自1993年以来,谷物基因组学已取得重大进展,揭示了不同谷物作物的植物架构中共同的祖先路径. 这一进步有望通过基因洞察改善作物品种.

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科学领域:

  • 植物科学 植物科学
  • 基因组学就是基因组学.
  • 农业科学 农业科学

背景情况:

  • 1993年的呼吁鼓励谷物研究人员将他们的学科视为一个统一的遗传系统.
  • 从那时起,这一举措促进了谷物研究的重大进展.

研究的目的:

  • 审查谷物基因组学的进展和未来方向.
  • 了解一个统一的遗传系统在谷物研究中的影响.

主要方法:

  • 关于谷物基因组学进展的调查.
  • 对序列组合和人口规模测序的分析.
  • 对抗性基因克隆和化遗传学的审查.

主要成果:

  • 草的基因顺序保护可能比以前假设的要少.
  • 确定反复出现的主题,包括对植物架构进化的祖先分子途径的选择.
  • 不同谷物作物的遗传趋同的证据.

结论:

  • 统一遗传系统的概念刺激了谷物基因组学的实质性进展.
  • 共同的进化途径和跨学科的合作是发现的关键驱动力.
  • 未来的研究有可能通过先进的遗传理解来开发改进的谷物品种.