绘制QTL与长度的添加和表观效应,以及它们对普通小麦内核相关特征的影响
Nina Sun1, Wei Liu1, Deyang Shi1
1Institute of Grain and Oil Crops, Yantai Academy of Agricultural Sciences, Yantai, China.
Frontiers in plant science
|September 5, 2024
概括
研究人员发现了控制小麦长度 (AL) 的新遗传因素,这是产量的一个关键特征. 这项研究揭示了新的定量特征位点 (QTL) 和基因,为改善小麦在育种计划中提供了有价值的标志物.
科学领域:
- 植物遗传学 植物遗传学
- 农作物科学 农作物科学
- 分子育种是一种分子育种.
背景情况:
- 小麦炉 (AL) 对于光合作用和气体交换至关重要,直接影响小麦产量.
- 了解AL的遗传控制对于通过分子育种提高小麦生产率至关重要.
研究的目的:
- 在小麦中确定控制长度 (AL) 的定量特征位点 (QTL).
- 发现与AL相关的新型基因和标记物,以提高小麦产量.
主要方法:
- 一个复合同血统 (RIL) 绘制人口 (YY-RILs) 的分析.
- QTL映射用于识别AL的添加物和表观位点.
主要成果:
- 鉴定出了7种附加性QTL和30种对联性表皮性QTL用于AL.
- 发现了五种新的添加剂和30种新的表观QTL,包括一个稳定的小QTL (qAl-5A.1).
- B1和WFZP-A基因分别与主要和次要稳定QTL相关. AL显示了与核重量和每核的遗传相关性.
结论:
- 这项研究加深了对小麦发育过程的遗传结构的理解.
- 确定了AL的新基因和标记物,为提高小麦产量提供了资源.
更多相关视频
08:36Development of Targeting Induced Local Lesions IN Genomes TILLING Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis
Published on: July 16, 2019
11.6K
08:27Large-Scale Multi-Omics Genome-Wide Association Studies Mo-GWAS: Guidelines for Sample Preparation and Normalization
Published on: July 27, 2021
3.6K
相关概念视频
Dihybrid Crosses
74.6K
Overview
74.6K
Epistasis Analysis
4.9K
Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
4.9K
Polygenic Traits
65.6K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
65.6K
Light Acquisition
8.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
8.4K
Epistasis
46.5K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
46.5K
Genome-wide Association Studies-GWAS
13.2K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
13.2K
