相关实验视频

Updated: Jan 18, 2026

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput

Published on: March 30, 2018

关于大麦中晚期开花ppd-H1等位基因的起源

Rajiv Sharma^1,2, Salar Shaaf^3,4, Kerstin Neumann³

¹Leibniz Institute of Plant Genetics and Crop Research (IPK), 06466, Gatersleben, Germany. Rajiv.Sharma@sruc.ac.uk.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik

|September 10, 2025

概括

适应气候的作物育种需要了解遗传适应. 在大麦中的关键突变.

科学领域:

植物遗传学植物遗传学
农作物适应农作物适应
气候变化研究研究气候变化研究

背景情况:

适应气候变化的作物对于粮食安全至关重要.
大麦 (Hordeum vulgare) 是研究气候适应的一个模型物种.
光周期反应是作物适应不同度的关键因素.

研究的目的:

分析大麦中PPD-H1位点的遗传变异.
为了了解化的历史和大麦的分散.
为了研究特定光周期反应突变的起源和影响.

主要方法:

重新排序一个大型的,地理引用的野生 (Hordeum spontaneum,Hordeum agriocrithon) 和养的麦的集合.
在PPD-H1位点对遗传变异的分析.
遗传学分析以推断起源和分散.

主要成果:

在PPD-H1位点 (PSEUDO-RESPONSE REGULATOR 7) 的自然突变导致了衰退的,晚期开花的ppd-H1等位基因.
这种突变在高度地区是有益的,使植物生长能够延长.
晚期开花的表型起源于南方Levant的沙漠类型野生大麦.
有证据表明,突变的ppd-H1等位基因起源于化后.

结论:

PPD-H1位点及其等位基在大麦适应气候方面发挥着重要作用.
了解像ppd-H1这样的适应性突变的起源,有助于培育适应气候的作物.
大麦的化和分散历史与适应性遗传变异有关.

更多相关视频

Identifying Mutations by High Resolution Melting in a TILLING Population of Rice

Identifying Mutations by High Resolution Melting in a TILLING Population of Rice

Published on: September 2, 2019

Identification of Plasmodesmal Localization Sequences in Proteins In Planta

Identification of Plasmodesmal Localization Sequences in Proteins In Planta

Published on: August 15, 2017

相关概念视频

Monohybrid Crosses

Monohybrid Crosses

Law of Segregation

Law of Segregation

When crossing pea plants, Mendel noticed that one of the parental traits would sometimes disappear in the first generation of offspring, called the F1 generation, and could reappear in the next generation (F2). He concluded that one of the traits must be dominant over the other, thereby causing masking of one trait in the F1 generation. When he crossed the F1 plants, he found that 75% of the offspring in the F2 generation had the dominant phenotype, while 25% had the recessive phenotype.

Incomplete Dominance

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.

Trihybrid Crosses

Trihybrid Crosses

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...

Test Cross

Test Cross

Alleles are different forms of the same gene. Humans and other diploid organisms inherit two alleles of every gene, one from each parent.

Gene Flow

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.